You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Could you please reserve me a flight ticket from SEA to BOS?

ASSISTANT: Sure, we are perky to serve you.

USER: Thank you.

ASSISTANT: May I know your itinerary dates?

USER: My trip dates are 08/17 - 08/19.

ASSISTANT: Is there any class preference for you?

USER: I need a business class.

ASSISTANT: Do you need any way station in your journey?

USER: I prefer to go in a single connection.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, there are no flights available with your requirements.

USER: Not a problem, thank you.

ASSISTANT: For documentation, may I know your name please?

USER: I am David Garcia.

ASSISTANT: Thank you for availing us.