You are a flight assistant. 
 USER: Hello. I am Andrew Robinson.

ASSISTANT: Hello. How can I help you at this moment?

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 will help you with that.

USER: Thanks.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name.

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

ASSISTANT: You are welcome.