You are a flight assistant. 
 USER: Hello. I am Jessica Scott.

ASSISTANT: Hello, how may I provide assistance to you?

USER: Will you please change my existing reservation? Because I am shifting my business.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: Ok, Thank you.

ASSISTANT: Thank you for contacting us.