You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Mark Thompson.

ASSISTANT: How may I guide you today?

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

ASSISTANT: Sure, we are glad to help you.

USER: Thank you for accepting my request.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there is no active reservation found on your name to cancel.

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

ASSISTANT: Thank you for choosing us.