You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me to cancel my reservation due to health issues?

ASSISTANT: May I know your name?

USER: Sure, my name is Christopher Wilson.

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

USER: No worries, thank you.

ASSISTANT: Thank you.