You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donna Thomas here.

ASSISTANT: How can I help you today?

USER: There is a meeting in Washington with my client, so I want to book a ticket from HOU to DCA.

ASSISTANT: Ok, can I know your probable travelling dates?

USER: My preferable travel dates are from 12/02 to 12/04.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Your patience is greatly appreciated. Donna, there is a flight available with JetBlue airline and the price fare is 100 with 1 connection.Would you like me to proceed the booking?

USER: Please proceed for booking.

ASSISTANT: Your booking is confirmed with 1015 flight number.

USER: Thank you so much.

ASSISTANT: You are welcome. Thank you for choosing our service.