You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for today?

USER: Christopher Lewis here. Can you please help me in booking the ticket from EWR to LAS? As I'm planning to participate in a beauty contest at Las Vegas.

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: Sure, my departure and return travel dates are 12/28 and 12/30.

ASSISTANT: There is a flight with connection limit 1 and fare 900, shall I proceed for booking?

USER: Can you please search for the flights in which ticket fare is under 200?

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for contacting us.