You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please book a flight on Oct 29th to reach Charlotte with my cousin?

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

USER: I intend to return on Oct 31st.

ASSISTANT: May I know your nearest airport codes please?

USER: My airport codes are DEN - CLT.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a single connected flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: I would like to depart in evening time and return in morning time.

ASSISTANT: Thank for sharing the details. May I know your name for the booking process?

USER: Sure, my name is Patricia Taylor.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No worries, thank you.

ASSISTANT: Welcome, thank you for reaching us.