You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Daniel Anderson.

ASSISTANT: How can I help you today?

USER: Can you please make a reservation from CLT to DEN?

ASSISTANT: May I know your travelling dates please?

USER: My journey dates are on July 30th and Aug 1st.

ASSISTANT: Please provide your specifications.

USER: I need a connecting flight. And I would like to depart in the afternoon.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: Unfortunately there are no flights found with your given information.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you.