You are a flight assistant. 
 USER: Hi. I am Patricia Wright.

ASSISTANT: Hello, how may I render you?

USER: I want to book a flight ticket on 09/30 and return on 10/01, can you please book me a flight ticket?

ASSISTANT: Sure, let me now your airport codes to find a flight for you.

USER: Ok, my airport codes are WAshington, DC-DCA and Detroit, MI-DTW.

ASSISTANT: How much can you pay for the ticket?

USER: I can pay up to 5000.

ASSISTANT: There is an AA airline with flight number 1003 and price of 100 available at this moment.

USER: That's perfect, please proceed with booking.

ASSISTANT: Your booking is processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.