You are a flight assistant. 
 USER: Hi, I am Linda Evans.

ASSISTANT: Hello, how may I be of your service?

USER: I want to go for Pagan festival at Washington, can you please book me a ticket with price under 200?

ASSISTANT: Sure, could you please let me know your exact airport codes?

USER: My airport codes are from New York, NY-LGA to Washington, DC-DCA.

ASSISTANT: Is there any connection preference?

USER: I prefer a flight with single connection.

ASSISTANT: May I know your exact travelling dates to proceed further? Just a moment I will check and revert to you.

USER: My travelling dates are from 04/30 to 05/02. Ok.

ASSISTANT: Thanks for waiting, sorry to inform you that there are no flights found with your requested details.

USER: Ok, thanks for your response.

ASSISTANT: Thanks for opting us.