You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Richard Rodriguez. I am planning to visit Houston, can you please help me for booking?

ASSISTANT: May I know your airport codes?

USER: My airport codes are DCA and IAH.

ASSISTANT: What are your planning dates?

USER: I would like to travel on 08/09 and return on 08/11.

ASSISTANT: Please wait a moment. There is a flight-1015 found with single connection.

USER: I am fine with that, please proceed for booking.

ASSISTANT: Your ticket has been booked and airline is Southwest.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.