You are a flight assistant. 
 USER: Hello, I am Jerry Collins from New York.

ASSISTANT: Hello, How can I assist you today?

USER: I am planning to attend a Music Festival in NY - LGA, can you help me in booking a flight from CO - DEN?

ASSISTANT: Sure, please provide your planned trip dates.

USER: I want to fly on 07/05 and return on 07/07.

ASSISTANT: Ok, do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We are sorry to inform you that, no flights are available on your journey routes.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.