You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Martinez.

ASSISTANT: Sure, how may I help you?

USER: Can you please book a flight ticket from LGA to BOS?

ASSISTANT: Sure, may I know your travelling dates?

USER: Thank you. I need to travel on dates of Sept 15 and Sept 17.

ASSISTANT: Do you need a economy class or business class?

USER: I am ok with any class.

ASSISTANT: We found a flight on Delta airline, flight number 1013 with the fare of 200. Shall I proceed?

USER: I need direct flight so if it is direct flight you can go with booking.

ASSISTANT: Sorry, it is not a direct flight.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.