You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Parker.

ASSISTANT: What help you are expecting from our flight ticket booking agency?

USER: I am planning to cancel my recent reservation, due to health issue. Can you help me out?

ASSISTANT: Oh! Ok, I will help you in cancelling the ticket. Can you please wait a minute? So that, I will check and let you know.

USER: Sure, I will wait for your reply.

ASSISTANT: Sorry to inform you that, I have not found any ticket booking under your name to cancel.

USER: That's fine. Thank you for your service.

ASSISTANT: You are most welcome. Thank you for reaching us. Have a nice day.