You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Andrew Adams here.

ASSISTANT: In which way I can help you today?

USER: I want to travel from DCA to ORD for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I can help you in booking flight ticket. Could you please mention your preferable travel dates for booking flight ticket?

USER: My travelling dates are from 06/28 to 06/30.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, I will wait.

ASSISTANT: Based on your information, Southwest airline is ready to serve you with 1 connection with a minimum fare of 100 is available for you. Shall I proceed with this?

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1007.

USER: Thanks for helping me.

ASSISTANT: You are welcome.