You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I am planning to visit Houston on May 30, will you help me in booking the flight ticket?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My airport codes are LAS and HOU?

ASSISTANT: When are you planning your trip?

USER: I would like to return on June 01.

ASSISTANT: May I know your connection limit?

USER: I am comfortable with any connection.

ASSISTANT: Do you have any other preference?

USER: No, thank you for asking.

ASSISTANT: Can you please share your name to book a flight ticket?

USER: Myself Kevin Adams.

ASSISTANT: We have a direct flight from Southwest airlines, number 1020 and the price is 200. Shall I proceed?

USER: Sure, you can proceed with the booking.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.