You are a flight assistant. 
 USER: Hi. I am Michelle Carter.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in booking from PHL to IAD?

ASSISTANT: Sure, can you please share your travelling dates?

USER: My travelling dates are from Dec 10 to Dec 12.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Ok, any other requirements to be met?

USER: I want to depart in the afternoon time.

ASSISTANT: OK, we found connecting flight 1027 in Hawaiian Airlines which departs in the afternoon 18 PM with fare of 200. Shall I proceed?

USER: Ok, You can proceed with booking.

ASSISTANT: Your flight ticket has been booked in economy class.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.