You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: I just want to cancel my reservation, so can you help me with cancellation?

ASSISTANT: Sure, may I know your good name?

USER: My name is Gary Hernandez.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.