You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book a flight ticket with 1 connection to attend a meeting in Philadelphia?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are to depart on June 14th and return back on June 16th.

ASSISTANT: Where would you like to leave?

USER: I would like to visit PHL.

ASSISTANT: Please share me your name.

USER: Myself Carol Anderson.

ASSISTANT: Can I know your leaving point?

USER: My boarding point is ORD and leaving point is PHL.

ASSISTANT: Sorry, there is no flight at this moment.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you.