You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you at this moment?

USER: I would like to cancel my reservation as I am leaving for pilgrimage, can you please help me out?

ASSISTANT: Sure, I am  happy to help you with that. Can I have your good name please to check your reservation status?

USER: Charles Miller here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Charles Miller, no reservation has found under your name to cancel.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us, have a good day.