You are a flight assistant. 
 USER: Hi. I am Ashley White.

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

USER: I want to attend sports event in JFK with my coach, can you help me with reservation?

ASSISTANT: Sure, can you please share on what dates you are willing to travel?

USER: I planned my trip on 12/21 to 12/23.

ASSISTANT: Can you please provide your nearest source airport code?

USER: I will start my journey from DEN.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure, I will be waiting.

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

USER: No issue, thank you for your time in checking.

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