You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to visit Houston to attend an interview, please help me in booking a ticket from DCA to HOU.

ASSISTANT: Sure, let me know your trip dates?

USER: My planned travel dates are on Oct 22 and Oct 24.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Is there any other specifications?

USER: No, thank you for asking.

ASSISTANT: Can I know your good name?

USER: My name is Donna Harris.

ASSISTANT: We found a connecting flight 1004 in Frontier airline with fare 100 and class is economy. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.