You are a flight assistant. 
 USER: Hi, I am David Wilson.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket from Atlanta to Boston, so can you book a direct flight please?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: Yes, my airport codes are GA-ATL and MA-BOS.

ASSISTANT: May I know when you have planned to travel?

USER: I have planned to travel on dates 10/09 and 10/11.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Ok.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for opting us.