You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

USER: Can you please help me to book a ticket from  IAH to DCA?

ASSISTANT: Sure, I am here to help you with that. Can I know your planned trip dates?

USER: My travelling dates are on Nov 13 and Nov 15.

ASSISTANT: Ok, do you have any other requirements?

USER: I prefer to travel in well known airline.

ASSISTANT: May I know your name?

USER: My name is William Robinson.

ASSISTANT: Can I know your connection limit?

USER: I need single connecting flight.

ASSISTANT: Yes, I have found a flight with the Southwest airlines having a connection limit 1 and the ticket fare of 100. Can I proceed with the ticket booking?

USER: You can proceed.

ASSISTANT: Your ticket is confirmed in an economy class and the flight number 1019.

USER: Thank you.

ASSISTANT: Thank you for reaching us. Have a safe journey.