You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Christine Gonzalez. Can you help me in booking a flight ticket from DC - IAD to MI - DTW?

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to fly on 05/01 and return on 05/03.

ASSISTANT: Do you have any preferences?

USER: Yes, I need a halt.

ASSISTANT: We found a direct flight in Hawaiian airline and price 100, Shall I proceed?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.