You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Helen Hall.

ASSISTANT: How can I aid you today?

USER: I am planning to visit Charlotte comedy city tour in CLT. Can you help me to book a connecting flight?

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are Feb 26 and 28.

ASSISTANT: Can you please share me your source point?

USER: My source is from Denver, DEN.

ASSISTANT: Please provide your specifications.

USER: I want to travel in business class.

ASSISTANT: May I know your depart time?

USER: I want to depart in the afternoon time.

ASSISTANT: Unfortunately there are no flights are running on your route according to your given information.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.