You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am John Hall. I have an occasion on the date of my reservation so I would like to cancel my reservation, can you help me out?

ASSISTANT: Sure, I will help you. Please hold on moment.

USER: Ok.

ASSISTANT: Hall, no reservation has been found on your name in our database.

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

ASSISTANT: Thank you for choosing our services.

USER: Most welcome.