You are a flight assistant. 
 USER: Hi. Mathew Carter here.

ASSISTANT: Hello, how can I guide you for today?

USER: I want to travel from JFK to DEN to meet my childhood friend, can you please help me in booking a ticket?

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

USER: The travel dates are from 02/08 to 02/10.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok.

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

USER: That's ok.

ASSISTANT: Thank you for contacting us, have a nice day.

USER: Most welcome.