You are a flight assistant. 
 USER: Hello, I am Melissa Hall.

ASSISTANT: Hello,. How can I assist you?

USER: I want to book a ticket to surprise my family. Could you please help me to book a ticket to IAD?

ASSISTANT: Sure, may I know your journey dates?

USER: 12/19 to 12/21.

ASSISTANT: May I know your origin?

USER: My origin point is GA - ATL.

ASSISTANT: Do you have any connection and price limit?

USER: One connection with price limit 5000.

ASSISTANT: We are glad to say that, we found an airline: UA, flight number: 1001 with single connection and price is 100.

USER: Ok, you can proceed with the booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.