You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How shall I help you?

USER: I am planning to visit a Funfair exhibition in Philadelphia, PA - PHL.

ASSISTANT: Ok.

USER: Could you please help me in booking my flight ticket?

ASSISTANT: Sure, please provide your travel code of source.

USER: My source is at Chicago, IL - ORD. I need a connecting flight.

ASSISTANT: When are you willing to travel on?

USER: My preferable travelling dates are 10/06 and 10/08.

ASSISTANT: Please share your name, to proceed further.

USER: I am Helen Phillips.

ASSISTANT: There is only direct flight available on respective dates.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for choosing us.