You are a flight assistant. 
 USER: Hello. I am Carol Evans.

ASSISTANT: Hello, how may I help you?

USER: I am a chief, I am  planning to conduct a food festival at New-York, NY-JFK., help me in booking my flight ticket from Las Vegas NV-LAS.

ASSISTANT: Sure, we are rapturous to help you. May I know your travel dates?

USER: My travelling dates will be 05/17 to 05/19.

ASSISTANT: Do you need any halt?

USER: I need a stopover in between the journey.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your specified dates.

USER: Its ok, thank you for your help.

ASSISTANT: Thank you for reaching us.