You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am George Lopez.

ASSISTANT: How can I assist you?

USER: I would like to travel from ATL to DEN, can you please help me in flight booking?

ASSISTANT: Can you please tell me your travelling dates?

USER: I want to fly on Mar 14, return on Mar 16.

ASSISTANT: May I know your depart and arrival timings?

USER: My return time should be afternoon.

ASSISTANT: Do you need connection limit in between your journey?

USER: Yes, I want a flight with one connection.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights available on your route.

USER: Not an issue, thank you.

ASSISTANT: Thank you for reaching us.