You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have some personal matters that need fixing so I need to change an existing reservation. Can you help me with rescheduling my reservation?

ASSISTANT: Sure, may I know your good name please to check the reservation list?

USER: Sure, I have made my reservation under the name of Amy Thomas.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to change the reservation.

USER: Ok, not an issues. Thank you for your information.

ASSISTANT: Thanks for consulting us.