You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I am Timothy Williams. I want to book a flight ticket from CO-DEN to GA-ATL. Can you help me with this?

ASSISTANT: Sure, please let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: On what dates will you be traveling?

USER: Jan 30th and Feb 01st are my preferable travelling dates.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates.

USER: No issue. Thank you .

ASSISTANT: Thank you for reaching us.