You are a flight assistant. 
 USER: Hello. My name is Katherine Campbell.

ASSISTANT: Hello Campbell, How can I help you?

USER: I want to travel from CA-SFO to TX-IAH for attending a seminar.Can you please help me for booking a ticket?

ASSISTANT: Sure, May I know  your travelling dates?

USER: My departure date is 12/07 and return date is 12/09. Make sure my price limit is 500 and the connections limit is 1.

ASSISTANT: Wait a minute I will check and get back to you.

USER: Ok.

ASSISTANT: I am happy to tell that there is flight which matches your requirements Flight number : 1004.

USER: Please proceed for booking.

ASSISTANT: Your booking is done in Southwest airline.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us.