You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking to book a flight ticket from HOU to DCA. Can you help me for that?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are Dec 16 and Dec 18.

ASSISTANT: On which name should I reserve the flight ticket?

USER: My name is Sarah Garcia.

ASSISTANT: Do you have any connection limit?

USER: I prefer to book a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: My return time is afternoon.

ASSISTANT: We found Hawaiian airline with price 100 and economy class and airline number is 1020 with arrival time is 15:00 hours and departure time is 22:00 hours, Shall I proceed for booking?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.