You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you for the day?

USER: I am Kenneth Lee. Could you help me in booking a flight ticket from Boston to Detroit on 08/01?

ASSISTANT: Sure, I am happy to help you. May I know, when you are planning to catch the return flight?

USER: I want to return on 08/03.

ASSISTANT: Help me with your boarding and landing airport codes please.

USER: My source and destination airport codes are MA - BOS, MI - DTW.

ASSISTANT: Do you have any requirements?

USER: I need a connecting flight.

ASSISTANT: Thank you for sharing your details. Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a flight available with Spirit airline, flight number 1003 with fare 100 and a lay by. Can I proceed to reserve?

USER: You can reserve it.

ASSISTANT: Your reservation has been successfully processed.

USER: Thank you.

ASSISTANT: Thank you for contacting us.