You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me to book a flight from BOS to SFO?

ASSISTANT: Sure, please share me your trip dates.

USER: Sure, I want to travel on Jan 17 and need to return on Jan 19.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: Myself Katherine Garcia.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: I do not have any other preferences.

ASSISTANT: There is a connecting flight 1018 in American Airlines at the price of 1200 with business class. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us.