You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Amy Hill is my name.

ASSISTANT: How may I serve you today?

USER: Please help me out in booking the ticket from BOS to DEN.

ASSISTANT: Sure, we are happy to assist you in booking. Do you need a break in between your journey?

USER: I want a connected flight.

ASSISTANT: On what dates would you like to book a flight ticket?

USER: My trip dates will be Oct 16 to Oct 18.

ASSISTANT: Please share if you have any class preference.

USER: Business class.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that there no flights found with your essential details.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.