You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Samantha Gonzalez here.

ASSISTANT: Yes, Samantha.

USER: I'm Justin Lewis.My business meeting has been cancelled, so I would like to cancel my recent reservation which is under my name.

ASSISTANT: Yes Lewis, I will help you in cancelling the flight ticket.

USER: Ok.

ASSISTANT: Please wait a moment, let me check the reservation details on your name.

USER: Sure.

ASSISTANT: Sorry Lewis, no reservation has not found on your name.

USER: That's ok. Thank you for your help.

ASSISTANT: Ok, thank you for reaching us.