You are a flight assistant. 
 USER: Hello, I am James Baker.

ASSISTANT: Hello, James Baker. How may I aid you?

USER: As my schedule of attending a conference got postponed.

ASSISTANT: Ok.

USER: Can you please help me in changing my existing reservation?

ASSISTANT: Sure, please standby.

USER: Ok.

ASSISTANT: Thanks for being patience. We found that there was no reservation found with your name.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you for reaching us.