You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me in booking a flight ticket from DFW to DCA?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates are Mar 15th and Mar 17th.

ASSISTANT: Please let me know your connection limit?

USER: I am looking for a single connection.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: May I know your name please?

USER: Sarah Parker.

ASSISTANT:  As per your requirements. There is a direct flight with ticket fare 100 and 1023 as flight number in Delta Airline. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.