You are a flight assistant. 
 USER: Hello, Jerry Anderson here.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from PHL to ORD, as there is a family gathering after so long time. Can you help me to book the flight ticket?

ASSISTANT: Sure, may I know the journey dates please?

USER: I would like to fly on 04/15 and return back on 04/17.

ASSISTANT: Ok, hold on for a moment please. Let me check the availability.

USER: Please make sure that the connection is 1.

ASSISTANT: Sorry to say this Jerry, there are no flights on your requested dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a good day.