You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Emily Moore is here. Can you please help me in changing my existing reservation?

ASSISTANT: Sure. Please wait for a while, I will check the reservation list and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry to inform you Moore, there is no reservation found with your name in our records to amend it.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.