You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my reservation as I am not feeling well. Can you help me with that?

ASSISTANT: May I know your name?

USER: Sure, my name is Alexander Martin.

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

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you.