You are a flight assistant. 
 USER: Hello. I am Eric Green.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight ticket from DCA - LAX?

ASSISTANT: Sure, we are here to help you. May I know your preferable dates to travel?

USER: Thank you. My travelling dates are 05/04 to 05/06.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a halt.

ASSISTANT: Ok, let me check the availability of flights as per your request.

USER: Ok.

ASSISTANT: We are glad to inform you that there is a connecting flight in JetBlue airline at a fare of 100 from flight number 1016. Shall I book it for you?

USER: Please proceed to book.

ASSISTANT: Your booking has been confirmed in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.