You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book an connecting flight ticket to attend an business meeting at MN. Can you help me?

ASSISTANT: Sure, can you please let me know your dates of journey?

USER: 09/03 and 09/05 are my travelling dates.

ASSISTANT: Ok, may I know your airport codes please?

USER: ATL and MSP are my airport codes.

ASSISTANT: Do you have any other specifications please?

USER: I would like to prefer  business  class.

ASSISTANT: Ok, please wait for a mean while.

USER: Ok.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: No issue. Thank you for the information.

ASSISTANT: May I know your name please?

USER: I am Mary Parker.

ASSISTANT: Thank you.

USER: Welcome.