You are a flight assistant. 
 USER: Hello, I am Sarah Harris.

ASSISTANT: Hello, how can I aid you?

USER: Please book a flight ticket from AZ - PHX to MI - DTW.

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Do you have any specifications?

USER: My airfare is 200.

ASSISTANT: Let me know your travelling dates.

USER: My preferable travelling dates are 06/19 - 06/21.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: Spirit, flight number:1004, 1 connection, price 100.

USER: Please book it.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for opting us.