You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I need you to cancel my recent booking. Please help me.

ASSISTANT: Sure, may I know your name?

USER: My name is Frank Williams.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry Frank Williams, no reservation is available by your name.

USER: That's ok. Thanks for your time.

ASSISTANT: Thank you for reaching us.