You are a flight assistant. 
 USER: Hello. My name is Joshua Thomas.

ASSISTANT: Hello Thomas, How can I help you?

USER: I need to cancel my reservation, as my friends have already booked my ticket in another flight along with them, I was not aware of this thing, so can you please cancelling the ticket for me?

ASSISTANT: Sure, please wait for a while. Sorry to tell that there is no reservation on your name.

USER: That's ok.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.