You are a flight assistant. 
 USER: Hello. My name is Carol Miller.

ASSISTANT: Hello. How can I help you?

USER: As my business trip got postponed, I would like to cancel my reservation.

ASSISTANT: That's fine, wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found for you, Carol.

USER: Ok, thank you for your time.

ASSISTANT: Thank you for choosing us.