You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight ticket booking agency?

ASSISTANT: Yes, your at right place. How may I aid you today?

USER: Me and my friends are planned a small hangout trip, but one of my friend is not attended on that day, so we are planned to extend our trip to some other day, so could you please help me out with changing my reservation to another date?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your name for checking is there any previous reservation available or not on your name?

USER: Sure, my name is Virginia Parker.

ASSISTANT: Ok, just give me a moment, I will check your previous reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: No previous reservation found on your name Virginia Parker.

USER: Oh, I think the ticket was not booked properly while I am booking.

ASSISTANT: Do you want to know any thing else from us?

USER: No, thank you for your information.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Welcome.