I am asking my friend for a favor. If he doesnot accept then i have to inform him that i will look for someone else to favor me. For this context, i am confused with using could and should or would in future sense.
If not, reply me so that i could sought for others!
Did the sentence conveyed what i expected?
I am little bit confused about future perfect tense and present perfect tense!
Thanks in advance
Update based on answers
Could is the 'past' form of can. It expresses past tense in 'real' mode, or non-past tense in 'unreal' mode, but it cannot express non-past in real mode. You have to use can.
But the next answer suggests
If not, reply to me so that I could seek help from others
I will look for next person if he denied and i am not sure whether he will deny or not. So that
could seek depends on a event that has yet to occur. So following infinitive form of the verb after
could expresses the context in present or future ?