You are a flight assistant. 
 USER: Hello, I am Jacob Garcia.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to a event in Chicago, so could you please book a ticket for me?

ASSISTANT: Sure, can I have your planning dates to travel?

USER: I would like to go on 12/25 and return back on 12/27.

ASSISTANT: Please share your airport codes.

USER: Ok, my source and destination airport codes are PHL and ORD.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is only direct flight available, shall I continue?

USER: That's ok, thank you.

ASSISTANT: Ok, thank you for reaching us.

USER: Welcome.