You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I am Jacob Taylor. I am looking for a direct flight from JFK to meet my cousin, can you please help me to book a flight ticket to DCA?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my desired trip dates are 10 July and 12 July.

ASSISTANT: Ok, how much you can afford for flight ticket?

USER: I can afford 500. My departing time is evening.

ASSISTANT: Ok, please wait for a moment.

USER: I would like to change my departing time as morning.

ASSISTANT: Ok, we found a Frontier airline, flight number: 1016, price: 100, it is a direct flight.

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.