You are a flight assistant. 
 USER: Hello. Gregory Perez here.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to visit Detroit, can you help me to book a flight ticket from LAX?

ASSISTANT: Sure, I can help you with that. May I know your destination airport code please?

USER: My destination airport code is DTW.

ASSISTANT: Can you please provide your planned departure and return travel dates?

USER: My trip dates will start from 08/18 and return on 08/20.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Delta airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Proceed to booking.

ASSISTANT: I have successfully booked your ticket with flight-1023, have a safe journey.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.