You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to cancel my reservation, due to some health problems I am unable to travel those dates, can you please cancel my reservation?

ASSISTANT: Please share your good name.

USER: Sure, my name is Joshua Young.

ASSISTANT: Sorry Young, no reservation on your name in our website.

USER: Oh! May be I am not booked my ticket properly at that time. Thank you for your information.

ASSISTANT: My pleasure, have a great day.