You are a flight assistant. 
 USER: Hi. I am Charles Robinson.

ASSISTANT: Hello, how can I support you?

USER: Can you help me in cancelling my reservation, as my interview is rescheduled?

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: Please wait for a moment, I will check with the reservation list to cancel it.

USER: Sure.

ASSISTANT: Thank you for your patience, we are sorry to inform you that there was no reservation found on your name.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us.