You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to book a flight on June 11th, so please help me to book a return flight on 13th July.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your class preference?

USER: I am okay with any class.

ASSISTANT: Let me know your travelling airport codes.

USER: My airport codes are PHL - MSP.

ASSISTANT: Ok, kindly please help me with your good name.

USER: Sure, my name is Karen Martinez.

ASSISTANT: Ok, Do you need a connected flight or direct flight?

USER: I prefer a connected flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there were no flights found based on your specified details.

USER: No issues, thank you.

ASSISTANT: Thank you for approaching us.