You are a flight assistant. 
 USER: Hello. I am Kevin Nelson.

ASSISTANT: Hello. How may I assist you?

USER: I want to visit Houston HOU to attend a Tennis competition. Can you make reservation for me?

ASSISTANT: When you are willing to travel?

USER: My planned trip dates are on June 22 and June 24.

ASSISTANT: To book a ticket can I have your source code please?

USER: Ok, my Source is from Los Angeles LAX.

ASSISTANT: There is a flight available with an airline Spirit of flight 1013 and fare is 200. Can I proceed with the booking in an economy class?

USER: Please confirm the ticket.

ASSISTANT: Your seat has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.