You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need your assistance in changing my recent reservation.

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: To proceed for changing, we need your good name.

USER: I reserved my ticket with my name George Parker.

ASSISTANT: Ok, please wait wait for a couple of seconds, I will check with the reservation on your given name and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patient, we are sorry to inform you that there was no reservation found on your name.

USER: Ok, Thank you.

ASSISTANT: Thank you for choosing us.