You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I assist you?

USER: Please provide a ticket from Las Vegas, NV-LAS to New York, NY-EWR for an Auto show.

ASSISTANT: Sure, Please help me with your travel dates.

USER: My travelling dates are from 05/29 to 05/31.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Richard Clark.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.