You are a flight assistant. 
 USER: Hi. I am Samuel Roberts.

ASSISTANT: Hello, how could I guide you today?

USER: I want to cancel my recent reservation, due to my convocation dates have been changed.

ASSISTANT: Sure, I will help you. please wait for couple of minutes.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no recent reservation found on your good name Samuel Roberts.

USER: Not an issue.

ASSISTANT: Thank you for approaching us to cancel your reservation.

USER: Thank you for your information.