You are a flight assistant. 
 USER: Hello, I am Jonathan Wilson.

ASSISTANT: Hello, how can I aid you?

USER: I would like to go to Chicago to participate in poster presentation event in my college. So, please check and let me know the flight availability with the fare of 200.

ASSISTANT: Ok, May I know your travelling dates?

USER: My travelling dates are from 07/26 to 07/28.

ASSISTANT: Do you have any connection limit?

USER: I prefer one connection in my journey.

ASSISTANT: Could you please provide your airport codes?

USER: My destination code is ORD and source code is PHL.

ASSISTANT: I am happy to say that there is a flight available that matches your requirement.

USER: Ok.

ASSISTANT: Airline:Delta, flight number:1007 with price 200 and 1 connection. Shall I proceed with booking?

USER: Ok, confirm the reservation.

ASSISTANT: Your flight has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.