You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good evening! How can I assist you?

USER: Help me in booking a flight from EWR to MSP?

ASSISTANT: Sure, I'm glad to help you with that. Can you please provide the dates on which you are planning to depart and arrive?

USER: My travelling dates are Nov 19 to 21.

ASSISTANT: How many connections are you expecting in between your journey?

USER: I prefer connection flight.

ASSISTANT: Would you like to travel in economy or business class flight?

USER: Business class.

ASSISTANT: Please let me know if you have any other specifications, I'll search for the flights according to that.

USER: No.

ASSISTANT: Ok, can I have your good name please?

USER: I am Michael Adams.

ASSISTANT: Thanks for providing your journey details, we are sorry to inform you that there are no flights available for you on those dates with your given details.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a nice day.