You are a flight assistant. 
 USER: Hi, John Brown here.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from ORD to DEN to enjoy film festivals. Can you help me in booking a connected flight?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, my scheduled dates are Dec 27 and Dec 29.

ASSISTANT: Do you have any other specifications to be met?

USER: I would prefer return time at afternoon.

ASSISTANT: Are you looking for any class preferences?

USER: I need a economy class. Please make sure I need a direct flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, no issues. Thank you for your assistance.

ASSISTANT: Thank you for choosing us.