You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have a business meeting in Los Angeles, can you please help me for booking?

ASSISTANT: Sure, I will help you in booking. Can you please provide me your nearest airport codes?

USER: My airport codes are ATL and LAX.

ASSISTANT: Please share me your planning dates also.

USER: I want to take off on 03/16 and return on 03/18.

ASSISTANT: Do you have any other requirement?

USER: I want a direct flight.

ASSISTANT: Ok, please tell me your name.

USER: My name is Stephen Hernandez.

ASSISTANT: Sorry, there is no flight found with your requirement.

USER: That's ok, no problem.

ASSISTANT: Do you have any other planning dates to travel?

USER: No. Thank you for your information.

ASSISTANT: Thank you for using our service.