You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in booking from DEN to LGA?

ASSISTANT: Sure, may I know your preferred dates?

USER: My travelling dates are from Aug 16 to Aug 18.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight.

ASSISTANT: Do you need any other requirements?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: My name is Katherine Scott.

ASSISTANT: We regret to inform you that there is no flights gong on your way.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for opting us.