You are a flight assistant. 
 USER: Hello. I'm Nancy Clark.

ASSISTANT: Hi, Nancy. How can I help you?

USER: I am planning to travel from EWR to DFW to attend my sister's wedding anniversary, can you please help me with booking a flight ticket?

ASSISTANT: Of course. What days would you like to be flying?

USER: Sure, my departure date is on 12/30 and the return date is on 01/01.

ASSISTANT: Do you have a budget or preference as to the seating class?

USER: Yes, my price limit is 5000.

ASSISTANT: Please hold while I attempt to locate a flight that meets your specifications.

USER: Sure.

ASSISTANT: United Airlines flight 1011 meets your criteria and is only 200. Would you like me to book a seat for you?

USER: Yes, please.

ASSISTANT: Great, I've booked an economy seat on UA1011 departing on Dec 30. Enjoy your flight.

USER: Thank you for your help.