You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Chicago to meet my uncle, will you help me in booking the flight ticket from BOS?

ASSISTANT: Sure, can you please pass on your planned journey dates?

USER: My preferable journey dates are Aug 10 and Aug 12.

ASSISTANT: Ok, would you like any lay off in your journey?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other preferences you want to avail for your journey?

USER: I prefer business class.

ASSISTANT: OK, on which name should the ticket be book?

USER: Myself Dorothy White.

ASSISTANT: Please wait.

USER: Ok, I will wait.

ASSISTANT: Sorry, no flights found as per your request.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.