You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Jason Miller. Can you please help me in booking the flight ticket from JFK to LAS?

ASSISTANT: Definitely I will help you with your concern. May I know your planned dates.

USER: My journey dates are May 15 and 17.

ASSISTANT: Do you have any specifications?

USER: I would like to depart in the evening and I like to return in the evening.

ASSISTANT: Do you have any other specifications?

USER: I need a connection in my journey.

ASSISTANT: Please allow me a moment to check.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting,Jason. Sorry, there are no flights found as per your intents.

USER: Sad to hear that, Thank you for the information.

ASSISTANT: Thank you for choosing our agency.