You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to return on 03/31 after finishing my work at Detroit. Can you help me book a flight ticket from Los Angels on 03/29?

ASSISTANT: Sure, I will help you to book a flight ticket. May I know your travelling airport codes?

USER: They are from LAX to DTW.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Hawaiian airline is providing flight for you with price 100 and connection is 1. Shall I proceed?

USER: Proceed for booking.

ASSISTANT: May I know your name to book a ticket?

USER: Gregory Green is my name.

ASSISTANT: Nice, your ticket has been booked with your name.

USER: Thank you for the booking.

ASSISTANT: It's my pleasure.