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

ASSISTANT: Hello, how may I assist you today?

USER: I want to celebrate my birthday at Houston, can you please help me to book a flight ticket from PHL to HOU?

ASSISTANT: Sure, could you please provide your depart and arrival dates?

USER: Sure, my travelling dates are Nov 17 and Nov 19.

ASSISTANT: Do you have any class preference?

USER: I am comfortable to travel in any class.

ASSISTANT: Let me know your connection limit, please?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: My departing time is morning.

ASSISTANT: Ok, please wait for a moment.

USER: My airline preference is normal-cost. Sure, take your own time.

ASSISTANT: We found a flight 1022 in Delta airline having a stopover and fare is 100 and departure time is 05:00 AM and arrival time is 09:00 AM. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.