You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Deborah Williams here.

ASSISTANT: What can I do for you?

USER: I have got an chance to study at Art Institute of Chicago, so for documentation purpose I have to go there. Can you please book a flight ticket for me?

ASSISTANT: That's nice, may I know your airport codes please?

USER: Sure, it's from LAX to ORD.

ASSISTANT: Ok, please help me with your journey dates.

USER: Sure, I will go on 10/13 and return on 10/15.

ASSISTANT: I found a flight for you with number 1011 in Delta airline.

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.