You are a flight assistant. 
 USER: Hello, My name is Betty Turner.

ASSISTANT: Hello, how could I serve you?

USER: I have got an invitation to attend a press conference regarding olympics at Washington. I would like to book a ticket, Can you help me, Please? My airport codes are NV -LAS to DC - DCA.

ASSISTANT: May I know your travelling dates?

USER: My travel dates are from 02/23 to 02/25. Price limit of 1000 and connections limit of 1 are my other restrictions.

ASSISTANT: Wait a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: We found an airline: Frontier, flight number: 1021 with a single connection and price is 200. Shall I proceed to booking?

USER: Yes, Please book the ticket.

ASSISTANT: Your booking is confirmed, with your name.

USER: Thank you, For your help.

ASSISTANT: Thank you, for choosing us.