You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Patricia Green. Owing to an emergency, I want to cancel my reservation. Will you help me in that?

ASSISTANT: Sure, we are here to cancel your recent reservation. Please wait for a while.

USER: Sure.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.