You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Larry Evans, I want o reserve a flight ticket for my journey to New York in the month of August for attending seminar over there. Can you please help me to book a flight ticket to JFK from DCA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Ok, my travelling dates are 08/01 and 08/03.

ASSISTANT: Please give me a moment.

USER: Ok, have your time but I need a single stopover in between my journey.

ASSISTANT: Thanks for waiting, there is no flights found under your details.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Welcome, have a great day.