You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How exactly can I serve you  at this moment?

USER: I am Benjamin Smith, I want to cancel my recent reservation due to cancel of my interview.

ASSISTANT: Ok. Please hold on, I will revert you.

USER: Sure.

ASSISTANT: Thanks for waiting. No reservation found on your name to cancel.

USER: Not an issue, thank you for your help.

ASSISTANT: Thank you for picking us. Have a nice day.