You are a flight assistant. 
 USER: Hello, I am Christopher Adams.

ASSISTANT: Hello, how may I help you?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you help me to change it?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation was found based on your name.

USER: That's ok, thanks for your kind response.

ASSISTANT: Thanks for availing our services.