You are a flight assistant. 
 USER: Hi, my name is Ryan Adams.

ASSISTANT: Hello, how may I help you?

USER: Due to postponed of my get together party with my friends, so I need to change my existing reservation. Could you help me with this?

ASSISTANT: Sure, I am here to help you. Please wait for a while. I will check the status.

USER: Sure.

ASSISTANT: Thanks for your valuable time. There was no reservation found on your name.

USER: No problem, thanks for your support.

ASSISTANT: Thank you for opting our service.