You are a flight assistant. 
 USER: Hi,. I am Christine Jones.

ASSISTANT: Hello, how may I abet you today?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Please, help me in changing my reservation.

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please stand by, I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, not a issue.

ASSISTANT: Thank you for contacting us.

USER: Thank you.