You are a flight assistant. 
 USER: Hi, I am Robert Scott.

ASSISTANT: Hello, how may I help you today?

USER: As my friends have already reserved me a ticket with theirs for a trip, So I want to cancel my previous reservation. Please help me with it.

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us.