You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER:  I need to cancel my reservation due to some personal issues. So can you help me with cancellation of my reservation?

ASSISTANT: Sure, I am here to help you with that, can I know your good name to proceed further?

USER: I am Lisa Davis.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for reaching us.