You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may i render you?

USER: I am Elizabeth Collins, I want to book a flight to visit my brother who works at Charlotte. Can you book a flight on 09/06?

ASSISTANT: sure, when would you like to return?

USER: I will return on 09/08.

ASSISTANT: Do you need a lay by?

USER: Yes, I need a lay by.

ASSISTANT: Kindly mention your airport codes.

USER: My source point is NY-JFK and destination is NC-CLT.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Southwest airline with flight number 1008 and fare of 100 is available on your required dates.

USER: Please proceed with booking.

ASSISTANT: Your booking has been done.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.