You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michael White.

ASSISTANT: How can I assist you today?

USER: I would like to book a ticket from BOS to CLT, can you please help me out?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I am travelling on these dates March 13th and 15th.

ASSISTANT: Do you have any specifications?

USER: I need departure flight in the afternoon.

ASSISTANT: Do you have any other preferences?

USER: I prefer business class.

ASSISTANT: Do you have any preferences about connections limit?

USER: I need a single connected flight.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Welcome, have a great day.