You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a flight ticket from DCA to IAH to meet my friends.

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

USER: My travelling dates are Apr 1 and Apr 3.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No, I do not have any other specifications.

ASSISTANT: May I know your name to proceed further?

USER: I am Nancy Hall.

ASSISTANT: There is a flight available with price 100 and the connection is 1 with United Airline. Would you like me to proceed with the booking?

USER: You can proceed with booking.

ASSISTANT: Your booking is confirmed with 1028 flight number and the depart time is 8:00 hours, return time is 4:00 hours.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.