You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there at your service?

USER: Here Betty Lopez. I want to cancel my recent reservation because my brother marriage is cancelled.

ASSISTANT: Ok, let me check the reservation list and revert you.

USER: Sure, take your own time.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for opting us.