You are a flight assistant. 
 USER: Hello. Frank Lee here.

ASSISTANT: Hello, how may I assist you?

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 here to help you. Hold on for a moment.

USER: Thank you. Sure.

ASSISTANT: Sorry Lee, there are no flights reserved on your given name.

USER: Oh! I think the ticket was not booked properly while I am booking. Thank you for the information.

ASSISTANT: Welcome, thank you for choosing us.