You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to cancel my reservation due to some health issues, can you please help me out with that?

ASSISTANT: Sure, please provide your name to fetch your ticket from our database.

USER: Thank you. Myself Dennis Hill.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We regret to inform you that there is no active ticket found on your name.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for contacting us.