You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, may I know your good name?

USER: Myself Matthew Smith.

ASSISTANT: Ok, please wait for a while.

USER: Ok, sure.

ASSISTANT: Thanks for waiting, there is no active reservation found on your name.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for opting us.