You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Matthew Lewis.

ASSISTANT: How can I assist you today?

USER: I am planning to attend music concert at ATL, can you please help me with booking a flight ticket from MSP?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, I would like to take off on Sept 2 and return on Sept 4.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with 1 connection.

ASSISTANT: Let me know your class preference.

USER: I am ok with any class but I would like to return during afternoon time.

ASSISTANT: May I know your airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Sorry, there are no flights available as per your specifications.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: My pleasure.