You are a flight assistant. 
 USER: Hello, Debra Lopez here.

ASSISTANT: Hello, how can I help you?

USER: I want to meet my twin sister in Detroit, please book my ticket from ATL to DTW.

ASSISTANT: Sure, can you mention the travel dates please?

USER: My travel dates are 05/27 and 05/29.

ASSISTANT: Give me a moment please.

USER: Take your time.

ASSISTANT: There is a flight in Spirit airline with price 100.

USER: Please reserve my ticket.

ASSISTANT: Your ticket has been booked with flight number 1015.

USER: Thank you for assisting me.

ASSISTANT: Thank you for approaching us.