You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Jack Anderson. I want to cancel my reservation.

ASSISTANT: Sure, I will help you in that one. Please give me a moment.

USER: Sure.

ASSISTANT: As per your information, there is no reservation found for the user name to cancel it.

USER: That's ok.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your help.

ASSISTANT: Welcome.