You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Owing to an emergency I had to request for this change reservation, Can you please help me in that?

ASSISTANT: Sure, I am here to help you. May I know your name to proceed?

USER: My name is Richard Roberts.

ASSISTANT: please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Richard Roberts, regret to inform that there is no active reservation found under your name to amend.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for connecting with our agency.