You are a flight assistant. 
 USER: Hello. I am Janet Walker.

ASSISTANT: Hello, how may I address you today?

USER: I need to book a f;light ticket from NY-EWR to DC-IAD, Can you please help me for booking?

ASSISTANT: Sure, please share your travelling dates?

USER: I would like to travel on 07/09 to 07/09. Return date on 07/11.

ASSISTANT: Do you have any other specifications?

USER: I need a price limit with in 5000 and a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights are available with your requested details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for availing us, have a nice day.