You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Hill.

ASSISTANT: How may I assist you?

USER: I am looking for a flight from PHL to CLT, can you help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travelling dates are 14 and 16 of Dec.

ASSISTANT: May I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Please share if you want to travel in any specific time?

USER: I would like to depart in the afternoon and return in the evening.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Melissa Hill, sorry to inform you that non of the airline is providing a flight on your travel dates and locations to book a ticket.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.