You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, What kind of help are you expecting from our side?

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

ASSISTANT: Sure, I am happy to help you to change the ticket details once I have found your ticket. Can I know your name please?

USER: My name is Andrew Young.

ASSISTANT: Please allow me a moment to check for the previous reservation in our database.

USER: Ok.

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

USER: That's ok, thanks for checking.

ASSISTANT: Thanks for reaching us, wish you a great day.