You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: David Hill here.

ASSISTANT: How may I aid you?

USER: Due to earthquakes at my location, I'm unable to catch the flight. Can you please cancel my recent booking?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: David, no reservation has been found on your name.

USER: That's ok, may be I did a wrong booking. Thank you anyways.

ASSISTANT: Thank you for approaching us.