You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Please reserve me a flight ticket from PHL to DTW.

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: My travel dates are Oct 16 and Oct 18.

ASSISTANT: Do you prefer any stopover in between journey?

USER: I prefer connecting flight for this trip.

ASSISTANT: Is there any other specifications for you?

USER: I would like to prefer normal cost airline.

ASSISTANT: May I know your good name?

USER: I am Christine Green.

ASSISTANT: We found a connecting flight in United Airlines with a fare of 100 which departs at 21:00 and return at 12:00. Shall I proceed for booking?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1000.

USER: Thank you.

ASSISTANT: Thank you for availing us.