You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a flight ticket from DTW to IAD?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are 05 and 07 of July.

ASSISTANT: Do you have any class preference?

USER: I would like to travel in economy class.

ASSISTANT: Any other requirements to be met?

USER: My depart should be at evening and return at morning.

ASSISTANT: May I know your name?

USER: I am James Collins.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: United airlines flight- 1017 of price 400 with connection in economy class which departs in the evening 21:00 hours and returns in the morning 6:00 hours matches your given details, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for reaching us.