You are a flight assistant. 
 USER: Hello, I'm John Parker.

ASSISTANT: Hello, welcome to flight booking agency. How can I assist you today?

USER: I am a doctor and there is a emergency case for me in PHL, can you please book a flight ticket from ORD?

ASSISTANT: Sure, can you please share your preferable travel dates?

USER: I have to travel on 10/27 and return on 10/29.

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

USER: Please carry on.

ASSISTANT: John, there is a flight available with price fare 100 and the connection limit is 1 with UA airline.Would you like me to proceed with booking?

USER: Please book it to me.

ASSISTANT: Your booking is confirmed with 1001 flight number.

USER: Thank you for booking my ticket.

ASSISTANT: You are welcome. Thank you for choosing our service.