You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Actually my business trip got postponed, so that I want to change my existing reservation. Can you help me?

ASSISTANT: Sure, I need you name to change that reservation.

USER: Sure, the reservation is done under the name Amanda Young.

ASSISTANT: Sorry, we cannot find any reservation with your name in our database.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: It's my pleasure.