You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: My weekend party has been postponed. Please help me to change my existing reservation.

ASSISTANT: Sure, for proceeding further may I know your name?

USER: Yes, I am Scott Clark.

ASSISTANT: Sorry to inform no reservation found with your name.

USER: Ok. Thanks for your response.

ASSISTANT: Thanks for reaching us, have a good day.