You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, may I know your name please to check further?

USER: Thank you for accepting my request, myself Matthew Lewis.

ASSISTANT: Please stand by.

USER: Sure, I will wait.

ASSISTANT:  Sorry, no reservation found on your given name in our database to cancel it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.