You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a flight ticket to BOS to attend for a conference. Can you please assist me for booking in economy class?

ASSISTANT: Sure, I am glad to help you in booking. Can you please share your travel dates?

USER: My preferred journey dates are July 14 and 16.

ASSISTANT: Ok, may I know travelling airport codes?

USER: I am boarding from MSP.

ASSISTANT: Let me know your connection limit.

USER: I need a connected flight.

ASSISTANT: Do you have any specification?

USER: My depart and return time is afternoon.

ASSISTANT: please wait a moment.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Charles Carter.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.