You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Richard Harris. I want to book a ticket from DCA to IAH, can you help me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travel dates are 09/17 and 09/19.

ASSISTANT: Do you have any class preference?

USER: I need a connecting flight.

ASSISTANT: Richard Harris, there is a flight available with price 100 and the connection is 1 with Spirit airline. Would you like me to proceed with the booking?

USER: You can book it.

ASSISTANT: Your booking is confirmed with 1003 flight number.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.