You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to visit New York to meet my friends, can you please aid me to book a flight ticket from Washington?

ASSISTANT: Please share me your travelling dates.

USER: Sure, my travelling dates are from Dec 9 and Dec 11 respectively.

ASSISTANT: Can I know your connection limit?

USER: I am fine with connecting flight.

ASSISTANT: Please share your airport codes.

USER: My airport codes are DCA and LGA.

ASSISTANT: Do you need any class preference?

USER: No, I am happy with any class.

ASSISTANT: Could I know your timings?

USER: No, I am happy with the intent that I mentioned above.

ASSISTANT: If you have any other requirements, let me know?

USER: No, other preferences.

ASSISTANT: May I know your name for reservation?

USER: Please book a ticket under the name Samuel Young.

ASSISTANT: There are no flights available on your required dates.

USER: That's ok, not an issue. Anyway thank you for your time to check with the availability of flights.

ASSISTANT: Thank you for opting us.