You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Jack Hall. I want to book a connecting flight under normal cost, can you help me with it please?

ASSISTANT: Sure, I will help you. Can I have your airport codes please?

USER:    My airport codes are PHL and CLT.

ASSISTANT: May I know your planned travel dates please?

USER: My travelling dates are 02/28 and 03/01.

ASSISTANT: Do you have any specifications?

USER: I need a business class ticket.

ASSISTANT: May I know your departure and arrival timings?

USER:  I would like to depart at afternoon.

ASSISTANT: Jack Hall, no flights has been found on your planned travel dates.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for approaching us.