You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Robinson.

ASSISTANT: How may I help you?

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

ASSISTANT: Sure, I am ready to help you.

USER: Thank you.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Ok, That's not a problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.