You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you change my recent reservation to new travel dates?

ASSISTANT: Sure, may I know your name to check with the previous reservation.

USER: Sure, I am Amanda Jones.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there are no active reservations on your given name to change.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching our service.