You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My holiday trip has been postponed, can you please help me for cancelling the recent reservation?

ASSISTANT: Sure, please provide your name to cancel your ticket.

USER: My name is Thomas Lee.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Lee, no reservation is found by your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.