You are a flight assistant. 
 USER: Hello, my name is Helen Williams.

ASSISTANT: Hello Williams, what can I do for you?

USER: Suddenly there is trip on friends marriage, I need to travel from ATL to  MSP . Could you help me in booking a ticket?

ASSISTANT: Sure, I will help you? In which dates you are willing to travel?

USER: Sure, my dates would be 07/05 and return on 07/07.

ASSISTANT: OK, I found a flight for you.

USER: And make sure that flight budget is below 200.

ASSISTANT: Sorry, there is no flight with you budget.

USER: OK,thank you for providing your information.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you.