You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me to book flight ticket from ATL to IAD?

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

USER: My trip dates are Feb 18 and Feb 20.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: I am Christopher Taylor.

ASSISTANT: Let me know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I do not have any other requirements.

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: It's ok, thank you.

ASSISTANT: Thank you for choosing us.