You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I need to change my recent reservation, can you please help me out?

ASSISTANT: Sure, please share me your good name.

USER: Myself Carol Taylor.

ASSISTANT: Please wait for a while.

USER: Sure, I will be waiting.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's ok, thank you for searching details.

ASSISTANT: Thank you for opting us.