You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gary Mitchell.

ASSISTANT: How may I help you?

USER: I want to cancel my flight ticket, can you please help me with that?

ASSISTANT: Sure, I am happy to help help you.

USER: Thank you.

ASSISTANT: Sorry to say that, there is no reservation found on name in our database. Do you need any other help?

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Ok, thank you for approaching us.

USER: Most welcome.