You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name please?

USER: I am Katherine Adams.

ASSISTANT: Ok Adams, what you are expecting from us?

USER: I book a flight ticket, unfortunately the trip is canceled so can you help me in canceling my reservation.

ASSISTANT: Sure, please wait a moment. I will check for the existing reservation. Sorry, I didn't find any reservation with your name.

USER: That's ok. Thank you.

ASSISTANT: You are welcome. Thank you for approaching us.