You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I'm Steven Hall. My holiday trip has been postponed. So, I would like to cancel my reservation.

ASSISTANT: Sure, I will help you. Sorry, there is no reservation with your name to cancel further.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us, have a great day.