You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please assist me in booking a flight ticket from HOU to IAD.

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

USER: My travel dates are from Oct 9th to Oct 11th.

ASSISTANT: May I know your connection limit?

USER: I want a single connection.

ASSISTANT: Do you need any other preference?

USER: I want to return in the evening.

ASSISTANT: Can I know your name please?

USER: I am Virginia Mitchell.

ASSISTANT: Delta Airlines is providing connecting flight with the ticket fare of 200 and depart time is 13:00 hours, arrival time is 21:00 hours. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed by flight number 1001 and an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.