You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, good morning. What services are you looking for?

USER: Justin Lewis here. I want to visit UNO building in New York, can you book a ticket from DCA to EWR?

ASSISTANT: Sure. On which date you are planned to travel from DCA?

USER: I want to go on 11/01 and return on 11/03.

ASSISTANT: Ok, please wait. There is a flight 1024 of Delta airline is available for you. Shall I proceed?

USER: Please check flight price should not exceed 200.

ASSISTANT: Yes, price is 100.

USER: Ok, go ahead.

ASSISTANT: Sure. Your ticket has been confirmed, have a safe journey.

USER: Thank you for your services.

ASSISTANT: Welcome.