You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: As I have a concert in Minneapolis, please book me a ticket from CLT to MSP.

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travel dates are June 05 to June 07.

ASSISTANT: Ok, may I know your name?

USER: I am Barbara Brown.

ASSISTANT: Do you have any airline preference?

USER: No, but try to select best you known.

ASSISTANT: May I know your connection limit?

USER: Assure to select a connected flight with return time in evening.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Ok, no problem. Thanks for your help.

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