You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I planned a trip to Houston city to meet my friend, can you help me to book a fight with one connection?

ASSISTANT: Sure, we are here to help you. Could you please tell me the price of the journey.

USER: I like to spend up to 500 for the flight ticket.

ASSISTANT: Kindly, mention your journey dates.

USER: I will travel on 02/03 and return on 02/05.

ASSISTANT: May I know your airport codes?

USER: My source airport code is DC-IAD and destination airport code is TX-HOU.

ASSISTANT: May I know your good name for further process?

USER: My name is Robert Harris.

ASSISTANT: Thank you for your information, please hold on.

USER: Sure.

ASSISTANT: Thank you for your valuable time. You have a flight with airline Delta with flight number 1029 and connection is 1 and price is 100. Can I reserve your seat?

USER: Sure.

ASSISTANT: Your reservation is done.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us,have a colourful day.