You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Gary Lopez, I want to book a flight on 05/20 to meet my friend at Charlotte. Can you book a flight with in fare of 500?

ASSISTANT: Sure, please provide me your return date?

USER: I will return on 05/22.

ASSISTANT: Kindly assign me your airport codes?

USER: My source airport code is MA-BOS and destination is NC-CLT.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1013 Spirit airline with single connection and price of 200. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for helping me.

ASSISTANT: Thank you.