You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I would like to meet my grand parents at New York, could you please help me in booking a ticket?

ASSISTANT: Sure, I will help you with that. May I know the travelling dates please?

USER: My travelling dates are from 12/26 to 12/28.

ASSISTANT: Ok, may I know the airport codes of your journey?

USER: My airport codes are from DCA to EWR.

ASSISTANT: Meanwhile, may I know your name please?

USER: My name is Robert Lee.

ASSISTANT: There is a flight 1001 in Spirit airline has the price 800 and the connection limit is 1. Can I proceed with this booking?

USER: Please check the price within 500.

ASSISTANT: Sorry, there are no flights with the price of 500.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for approaching us, have a nice day.