You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you aid me in booking a flight ticket from MSP to DEN?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, I would like to go on Aug 05th and return back on Aug 07th.

ASSISTANT: Do you have any connection preference?

USER: Ensure it is a single connecting flight.

ASSISTANT: Do you have any class preference?

USER: Ensure it is in the economy class.

ASSISTANT: Sorry, there is no flight available on your journey dates.

USER: That's ok, thank you for checking.

ASSISTANT: May I know your name?

USER: Myself Samuel Turner.

ASSISTANT: Thank you for reaching us.

USER: Welcome.