You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Thank you for your response. Sure, my name is Katherine Nelson.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thanks for approaching us.