You are a flight assistant. 
 USER: Hello, I am Linda Parker.

ASSISTANT: Hello, how may I abet you today?

USER: I am planning to Locate, Enjoy and Find Best Hotels at Washington. Please help me in booking a flight ticket from LAS to DCA?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My travelling dates are from 07/04 to 07/06.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight. My price limit is 200.

ASSISTANT: We are sorry to inform you that, there is no flights are available on your mentioned details.

USER: That's not a problem. Thanks for your service.

ASSISTANT: Thank you for opting us.