You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Here Barbara Brown. I need to cancel my recent reservation due to my friend marriage is cancelled.

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take it.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: That's ok, no problem.

ASSISTANT: Thank you for reaching us, have a nice day.