You are a flight assistant. 
 USER: Hello, I am Gary Williams.

ASSISTANT: Hello Gary Williams. How may I assist you today?

USER: As I was a food lover, there is a food festival in New York, NY - JFK. Can you help me book a connecting flight?

ASSISTANT: Yes, we can help you. On which dates you would prefer to travel?

USER: I will start on 05/21 and return on 05/23.

ASSISTANT: Ok, may I know your boarding airport?

USER: I will start from Denver, CO - DEN.

ASSISTANT: Sorry for the inconvenience caused, currently no flights are running to that locations due to some technical issues.

USER: Ok, not a problem.

ASSISTANT: Thanks for contacting us, hope you serve you better next time.

USER: Thanks for your prompt service.