You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you aid me to book a flight ticket from LAS to JFK?

ASSISTANT: When you are willing to travel?

USER: My trip dates are Dec 27 and Dec 29 respectively.

ASSISTANT: May, I know your good name?

USER: Linda Scott here.

ASSISTANT: Do you have any connection limit? Do you have any other requirement?

USER: I prefer for single connecting flight. I prefer to travel in normal cost airlines.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.