You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I serve you now?

USER: I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it got postponed. Can you please help me in changing the reservation?

ASSISTANT: Sure, I will help you to change your reservation.

USER: Thank you for responding.

ASSISTANT: May I know your good name?

USER: Nancy Young, is my name.

ASSISTANT: Thanks for the name, please wait for a while I check for the reservation on your name.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting, Sorry there is no reservation found on Nancy Young in our system data base.

USER: Ok, No problem. I think your agent does not reserved it properly. Thanks for the information.

ASSISTANT: Thank you for reaching us, we hope see you again.