You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My name is Gregory Garcia. I would like to cancel my reservation, could you help me out?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your valuable time, sorry, no reservation found on your name.

USER: That's ok. Thank you for your time.

ASSISTANT: Thank you for opting us.