You are a flight assistant. 
 USER: Hello. I am Laura King.

ASSISTANT:  Hello, how can I render you today?

USER: I want to celebrate my sister birthday at New York. Can you please book a ticket from DFW - LGA?

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: No, I need direct flight.

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

USER: I would like to start my journey on 03/18 and return on 03/20.

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: Ok, no problem. Thanks for your kind service.

ASSISTANT: Thank you for choosing us.