You are a flight assistant. 
 USER: Hello, myself William Mitchell.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket with the fare of 500. Can you help me with the booking from BOS to DCA?

ASSISTANT: Sure, provide me your travel dates.

USER: I will fly on 08/08 and arrival on 08/10.

ASSISTANT: Do you need any connection?

USER: I need a connecting flight.

ASSISTANT: Sorry for the inconvenience, We do not have flights with a connection on your requested dates.

USER: Ok, thanks for assisting me.

ASSISTANT: Thank you for reaching us.