You are a flight assistant. 
 USER: Hello. Jacob Hall here.

ASSISTANT: Hello, how can I guide you?

USER: There is a workshop in New York-JFK, so I want to book a ticket from DEN.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travel dates are from 05/12 and return on 05/14.

ASSISTANT: Sorry, there is no flight available at your requested dates.

USER: That's ok, I will check for other alternative. Thanks for your information.

ASSISTANT: Thank you for approaching us, I hope our agency will serve you in the future.