You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my recent reservation, which I have done with my name Sandra Wilson. Would it be possible to cancel my reservation?

ASSISTANT: Sure, I will help you to cancel that reservation, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: I could not find any reservation with your name to cancel that reservation.

USER: It's ok, not an issue. Thanks for checking.

ASSISTANT: Thanks for choosing us, have a nice day.