You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Book a ticket from Atlanta to Detroit under a fare of 5000.

ASSISTANT: Sure. May I know your travelling dates?

USER: Sure, my travelling dates are 09/20 and 09/22.

ASSISTANT: Can I know your airport codes?

USER: ATL and DTW is my source and destination airport codes.

ASSISTANT: May I know your name?

USER: Patricia Edwards is my name.

ASSISTANT: There is a flight 1015 in Spirit airline and price 300 with a connection. Shall I proceed?

USER: Perfect, you may proceed.

ASSISTANT: Ok, Your ticket has been done.

USER: Thanks a lot for the great help.

ASSISTANT: Thank you.