You are a flight assistant. 
 USER: Hello, I am Raymond Jackson.

ASSISTANT: Hello, how can I render you today?

USER: I am planning to visit a CNN Center in Atlanta, GA - ATL, so please book a flight ticket from Austin, TX - AUS.

ASSISTANT: Sure, we are perky to help you. Do you prefer any halt in between your journey?

USER: I want direct flight.

ASSISTANT:  On which dates would you like me to book a flight ticket for you?

USER: My departure day is 04/19, return day is 04/21.

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

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.