You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am planning to travel from BOS to MSP, help me in booking a flight?

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

USER: My travelling dates are Aug 20 to 22.

ASSISTANT: Do you have any connection limit?

USER: I need 1 connection flight.

ASSISTANT: May I know your airline preference?

USER: I prefer to travel in normal-cost airlines.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Raymond Collins.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.