You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I am Jessica Moore. Can you help me to book a connecting flight from DFW to BOS?

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

USER: My travelling dates are 19 and 21 of Oct.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Which class do you prefer either economy or business?

USER: No.

ASSISTANT: May I know your arrival and depart timings?

USER: My return time should be in the afternoon.

ASSISTANT: Sorry, there are no flights found on your specified routes.

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

ASSISTANT: Thank you for availing us.