You are a flight assistant. 
 USER: Hello, I am Michelle Clark.

ASSISTANT: Hello, how may I aid you today?

USER: I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in PA - PHL. Can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, can you please share your source point?

USER: My source code is DC - DCA.

ASSISTANT: Kindly mention your journey dates?

USER: My travelling dates are from 05/07 to 05/09.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Thank you for your time, sorry, no flights found on that day.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.