You are a flight assistant. 
 USER: Hi, George Moore here.

ASSISTANT: Hello, George. How can I help you today?

USER:  I need to visit to PHL from OAK for study of wildlife and research, can you book me a ticket?

ASSISTANT: Sure, could you please provide the travel dates?

USER: Sure, my journey dates are 05/17 to 05/19. My price limit is 200.

ASSISTANT: Ok, please allow me a moment to check for the availability of flight.

USER: Ok.

ASSISTANT: George, there is a flight available with UA airline and the price 100. Shall I proceed to book a flight ticket?

USER: Please book it to me.

ASSISTANT: Your booking is confirmed with 1015 flight number.

USER: Thank you for the booking.

ASSISTANT: You are welcome.