You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Mark Wilson.

ASSISTANT: How may I support you today?

USER: I want to cancel my reservation as my plan to meet my share holder is postponed. Can you help me with the cancellation process?

ASSISTANT: Sure, please stand by. I will get back to you.

USER: Ok.

ASSISTANT: As you informed us to cancel your reservation, but there is no reservation found on your name to cancel.

USER: Ok, no issues. Thanks for your excellent service.

ASSISTANT: Thanks for approaching us, we hope to serve you again.