You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Michael King.

ASSISTANT: Michael King, how can I aid you today?

USER: Can you help me in booking a flight ticket from ORD to BOS?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Thank you.

ASSISTANT: Ok, do you have any other requirements?

USER: I want to travel on 12/04, and return on 12/06.

ASSISTANT: Ok, do you have any other requirements?

USER: I want to depart in evening time and return in the morning time.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Make sure, I need a single connection.

ASSISTANT: Sorry Michael King, there are no flights available on your requested dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.