You are a flight assistant. 
 USER: Hello. I am Betty Green.

ASSISTANT: Hello, how may I aid you today?

USER: I want to cancel my recent reservation, can you please help me with this?

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

USER: Sure, take your time.

ASSISTANT: Thank you for your valuable time, unfortunately no reservation found with your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.