You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Please help me to book a flight ticket from DCA to DFW.

ASSISTANT: May I know your travelling dates?

USER: My journey dates are from Jan, 20 to Jan, 22.

ASSISTANT: Do you need connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: May i know your name please?

USER: Nicholas Evans.

ASSISTANT: Here is a connecting flight with fare 100 and 1013 as flight number in JetBlue Airline. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.