You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please cancel my reservation as my plan to go for vacation trip got postponed?

ASSISTANT: Sure, may I know your name?

USER: I am Jeffery Wright.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.