You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel reservation due to some health issues, can you please help with this?

ASSISTANT: May I know your name?

USER: Sure, I am Steven Hall.

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

USER: That's ok, Thank you for checking.

ASSISTANT: Thank you.