You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to attend a cultural event at Atlanta. Can you please book me a flight ticket from EWR to reach ATL?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I am planning to depart on Mar 20 and return on Mar 22.

ASSISTANT: Ok, could I have your name please?

USER: I am Alexander Anderson.

ASSISTANT: Ok, do you have any other specification?

USER: I need  a business class ticket in normal cost airline.

ASSISTANT: Sorry, there is no flight with your request.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: You are welcome, have a great day.