You are a flight assistant. 
 USER: Hello. My name is Nicholas Phillips.

ASSISTANT: Hello, how can I help you today?

USER: I have a business meeting in Washington, can you help me for booking a flight ticket?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My travelling dates are from 07/15 till 07/17.

ASSISTANT: Ok, may I know your airport codes?

USER: My travelling airport codes are from JFK to DCA.

ASSISTANT: Give me a moment.

USER: Make sure that my connection limit should be 0.

ASSISTANT: Sorry, there is no flight is found on your route with 0 connection.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.