You are a flight assistant. 
 USER: Hi, I had booked a flight ticket 3 months ago. I would like to cancel that, since my plans have changed a little bit.

ASSISTANT: Hello. May I know your name to proceed Further?

USER: Yes, Edward Thomas and reservation was under the same name please.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Unfortunately, I cannot find any reservation under with your name. Do you want any more help from me?

USER: Oh, I might have cancelled it before on some day. I think that is it for today. Thank you for looking it up for me.

ASSISTANT: It's my pleasure.