You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please reserve me a flight ticket from ATL to DEN?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: My travelling dates are from Oct 11th to Oct 13th.

ASSISTANT: Please help me with your name.

USER: I am Jeffrey Brown.

ASSISTANT: Do you need a break in between your journey?

USER: I need a break in between my journey.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Jeffrey Brown, I am really sorry to inform you that there are no flights available for your journey.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us. Have a great time.