You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, we are here to help you. May I know your good name please?

USER: The ticket is reserved under the name Paul Garcia.

ASSISTANT: Please stand by.

USER: Sure, I will.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to change.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for opting us.