You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you today?

USER: I am Alexander Hall. I want to cancel my recent reservation due to postponed of my journey. Can you please help me with that?

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you.

ASSISTANT: Please wait a moment I will check the reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting, unfortunately there is no reservation found by this name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for availing us.