You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Elizabeth Davis.

ASSISTANT: How can I render you?

USER: I want to book a flight ticket to meet my brother at Detroit, please help me with a connecting flight.

ASSISTANT: Sure. May I know your journey dates?

USER: My travelling dates are from 04/01 to 04/03.

ASSISTANT: Do you have price limit?

USER: I can afford up to 5000.

ASSISTANT: Help me with your airport codes.

USER: I want to fly from AUS to DTW.

ASSISTANT: Please, wait.

USER: Ok].

ASSISTANT: There is a flight with airline: Spirit, flight number:1015, price 200, 1 connection.

USER: Please go with booking.

ASSISTANT: Your booking has done.

USER: Thanks for your service.

ASSISTANT: Thank you, have a nice day.