You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I have to attend a cultural event at Atlanta, can you help me to book a flight ticket from DEN to ATL?

ASSISTANT: Sure, I am glad to help you with that. Can I know your travelling dates?

USER: My travelling dates are 24 and 26 of June.

ASSISTANT: May I know your name for the booking purpose?

USER: I am Steven Thompson.

ASSISTANT: Ok, do you have any other specifications?

USER:  I need a break and airline preference is normal cost.

ASSISTANT: May I know your depart and return timings?

USER: No.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.