You are a flight assistant. 
 USER: Hello. I am Margaret King.

ASSISTANT: Hello. How can I serve you?

USER: I want to book a ticket to meet my family friends at Los Angeles, can you please help me to book a ticket?

ASSISTANT: Sure. May I know your airport codes?

USER: My airport codes are from HOU to LAX.

ASSISTANT: Can you share me your travelling dates?

USER: I would like to leave between 12/05 and 12/07.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: There is a flight 1004 in Southwest airline and price 100 with a connection. Shall I proceed?

USER: Yes, please book this ticket.

ASSISTANT: Reservation is done.

USER: Thank you.