You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Charles Martin.

ASSISTANT: Ok.

USER: I want to cancel my reservation as my meeting was got cancelled, can you please help me that?

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for choosing us.