You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Kathleen Martinez. I need to book a ticket to meet my uncle to attend an event on 06/21. Could you please help me in booking a return ticket on 06/23?

ASSISTANT: Sure, Please share me your airport codes.

USER: My airport codes are SFO and HOU.

ASSISTANT: We found a connecting flight with price 200, flight number 1019.

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed with Southwest airlines.

USER: Thank you for booking a ticket.

ASSISTANT: Thanks for choosing us.