You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please book a flight ticket from LGA to BOS that I have to write an exam at Boston location?

ASSISTANT: I am happy to serve you about that. Can you please let me know your scheduled dates of journey?

USER: I want to depart in the month of July and the travel dates would be 16 and 18.

ASSISTANT: Please provide your name for booking purpose.

USER: My name is Katherine Robinson.

ASSISTANT: Would you like to travel in a direct flight or in a connected flight?

USER: I need  a connecting flight.

ASSISTANT: Do you have any other requirements for your journey?

USER: Book the ticket in a business class that it will satisfy all my requirements.

ASSISTANT: Sorry to say this Katherine Robinson, there are no flights which travels to your region.

USER: It's very sad, anyway thank you for your assistance in searching for the flight.

ASSISTANT: You are welcome, thank you for reaching us.

USER: Welcome.