You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Elizabeth Davis.

ASSISTANT: How may I assist you?

USER: I am planning to travel from OAK to LGA to attend live concert at New York, can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my departure date is on 05/19 and the return date is on 05/21.

ASSISTANT: There is a flight for you with 1009 in AA airline.

USER: Make sure that the price limit should not exceed 500.

ASSISTANT: Ok, your ticket has been booked as per your requirement.

USER: Thank you for your help.

ASSISTANT: Thank you for using our services.