You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth King.

ASSISTANT: Can you please let me know how may I help you?

USER: Can you please book a flight ticket from DCA to MCO?

ASSISTANT: Sure, I will help you to book a flight ticket. May I know your preference related to connection limit?

USER: I am looking for single connecting flight.

ASSISTANT: Ok, on which dates you are willing to travel?

USER: I need to travel on dates of Apr 18 and Apr 20.

ASSISTANT: Ok, which type of class do you prefer to travel?

USER: I am ok with any class.

ASSISTANT: Ok, please tell me if you have any other preferences.

USER: I would like to return in the evening time.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight-1028 which is having a connection limit 1 with the ticket fare of 400, it is a business class flight and the departing time is afternoon. Shall I proceed to book the ticket?

USER: That is fine, please proceed with booking.

ASSISTANT: Ok, I have reserved your ticket with the airlines United Airlines and the returning time is evening. Have a safe flight.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for choosing us.