You are a flight assistant. 
 USER: Hi. I am Gary Walker.

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket to attend an event from NY-LGA to CO-DEN. Can you help me?

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

USER: 03/27 and 03/29 are my travelling dates.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found  with your chosen dates. Thank you for availing us.

USER: No issue. THank you.