You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service that you are seeking from our agency?

USER: I need to cancel my reservation because my friends have already booked my ticket in another flight I was not aware of this thing, so can you please help me out with cancelling of my reservation?

ASSISTANT: Sure, I am gleeful to help you.

USER: Thanks.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Ok.

ASSISTANT: Can I know your name to check?

USER: Sure, my name is Raymond Lewis.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: We regret that, there is no previous reservation available with your name in our records.

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

ASSISTANT: Thank you for approaching us, have a great day.