You are a flight assistant. 
 USER: Hello, I am Pamela Walker.

ASSISTANT: Hello,. How can I help you?

USER: Owing to an emergency, I need to travel to Washington.

ASSISTANT: OK. Can I know your Depart and Return days?

USER: Sure, I am travelling from Dallas and Fort Worth , TX-DFW to Washington, DC-DCA. My travelling dates are 12/19 to 12/21 with price limit 1000.

ASSISTANT: Sure, please wait for a moment I will check the availability and get back to you.

USER: OK.

ASSISTANT: Thank you for waiting a moment. I found a flight matching your criteria.

USER: Can you provide me flight details please?

ASSISTANT: Sure, UA airline with flight number : 1011 and price of 200. Shall I proceed with the booking?

USER: Yes, please confirm my booking.

ASSISTANT: OK. Your has been processed.

USER: Thank you for your confirmation.

ASSISTANT: Thank you for choosing us. Have a good day.