You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I have to attend an interview in QA software solutions at MN, can you please help me to book a flight ticket from DEN to MSP?

ASSISTANT: Sure, may I know your journey dates?

USER: Thank you, my journey dates are Dec 22nd and 24th.

ASSISTANT: May I know your class preference?

USER: I would like to prefer economy class.

ASSISTANT: Do you prefer a connecting flight?

USER: I prefer a flight which has maximum of a single connection.

ASSISTANT: May I know your airline preference?

USER: I am ok with any standard airlines.

ASSISTANT: Can I know your good name, please?

USER: Myself Stephen Miller.

ASSISTANT: There is a flight of Delta airline, flight number 1013 with the fare of 100.

USER: Please, reserve it.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for the service.

ASSISTANT: Thank you for choosing us.