You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Atlanta History Center.Can you please help me out?

ASSISTANT: Sure, can I know the codes of airport from where you are going to catch your flight?

USER: The source code is from MN-MSP on 11/07.

ASSISTANT: Can I know the return date?

USER: The destination airport code is GA-ATL on 11/09.

ASSISTANT: Sorry, there is no flights available on your required dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: My name is Margaret Williams.

ASSISTANT: Can I know your good name? Ok, thank you.

USER: Thank you for your information.

ASSISTANT: Welcome.