You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Margaret Scott.

ASSISTANT: What type of service you are expecting from us?

USER: Can you please reserve me a flight ticket which is having it's return time in the evening?

ASSISTANT: Ok, I will help you with that. Can I know your travelling dates?

USER: My trip dates are 11/19 - 11/21.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are DTW - PHL.

ASSISTANT: Do you have any other specifications?

USER: I need a single connection.

ASSISTANT: Do you have any other preferences?

USER: No, thank you for asking.

ASSISTANT: The United airlines are providing a flight having a connection limit 1 and the ticket fare of 300. ARe you ok with this flight?

USER: Please reserve.

ASSISTANT: I have confirmed your ticket in an economy class and the flight number 1015 which is depart at 7:00 Am and return at 20:00 PM.

USER: Thank you.

ASSISTANT: Thank you for consulting us. Have a safe journey.