You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I have an appointment with my family doctor in IAH. Can you please make a reservation from DCA?

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

USER: Sure, I want to depart on My 17 and need to return on May 19.

ASSISTANT: May I know your connection limit?

USER: Please book a flight with single connection.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: I am Emily Thompson.

ASSISTANT: United Airlines is providing connecting flight with the ticket fare of 100 and depart time is 18:00 hours, arrival time is 14:00 hours, Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed by flight number 1025 in economy class.

USER: Thank you.

ASSISTANT: Thanks for choosing us.