You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book a ticket from BOS to DEN?

ASSISTANT: Sure, please share your journey dates?

USER: My travel dates are Feb 6 and Feb 8 respectively.

ASSISTANT: Do you have any specifications?

USER: I prefer for single connection.

ASSISTANT: Is there any class preferences?

USER: I would like to travel in Business class.

ASSISTANT: May I know your good name?

USER: Michael Gonzalez here.

ASSISTANT: Sorry, no flights found on your given details.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.