You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am Susan Evans, can you help me to book a flight from CLT to IAD?

ASSISTANT: Sure, let me know your travel dates please?

USER: My trip dates are 12/07 and 12/09.

ASSISTANT: Do you have any specific arrival and depart timings?

USER: I need to return at evening.

ASSISTANT: Ok, is there any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you need any airline preference?

USER: No.

ASSISTANT: AA airlines is providing connecting flight with the ticket fare of 100 and depart time is 20:00 PM, arrival time is 20:00 PM. Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Your ticket has been confirmed by flight number 1027 and an economy class.

USER: Thank you.

ASSISTANT: Thanks for choosing us.