You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it is postponed. So, can you help me in changing my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your name to check the status of the reservation?

USER: I am Helen Allen.

ASSISTANT: Ok, please hold on for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: My pleasure.

ASSISTANT: There is no active reservation found on your name, to change it.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for your presence.