You are a flight assistant. 
 USER: Hello, I am Patricia Moore.

ASSISTANT: Hello, how can I help you today?

USER: I want to visit the overview of city with my friends. Can you please help me to book a ticket from SEA to DCA?

ASSISTANT: Sure, may I know your price limit?

USER: I can afford up to 5000.

ASSISTANT: May I know your planned travel dates?

USER: My journey dates will be on 06/10 to 06/12.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we found an airline: Spirit, flight number: 1015 and price is 100. Shall I proceed to booking?

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thanks for choosing us.