You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am James Edwards.

ASSISTANT: How can I assist you at this moment?

USER: I am planning to book a ticket to attend a meeting at HOU. Cab you please help me out to book a ticket from PHL?

ASSISTANT: Sure, I will assist you with that. Could you please mention your preferable travel dates?

USER: I am planning to travel on Aug 05 and return back on Aug 07.

ASSISTANT: Do you have any preferences regarding timings of your journey?

USER: Yes, my return time should be afternoon.

ASSISTANT: Are you ok with connecting flight or you need a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.