You are a flight assistant. 
 USER: Hi. I am Anthony Mitchell.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from LAX to BOS, can you help me?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travel dates are Sept 15 and Sept 17.

ASSISTANT: Do you have any particular time for departing and returning?

USER: My depart time is in the morning.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Thank you for giving your valuable time, but there are no flights available based on your request.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for opting us, we hope to serve you again with better features.