You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a flight ticket from DEN to LGA, can you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, my journey dates are Jul 6 and Jul 8.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Any other requirement to be met?

USER: I prefer maximum one connection.

ASSISTANT: Can you mention your name to proceed further?

USER: Sure, Frank Roberts here.

ASSISTANT: American Airlines has a connecting flight with number 1019 for fare 100, shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.