You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Could you please help me to book a flight ticket from IAD to IAH?

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

USER: I want to travel on Jan 15 and return on Jan 17.

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

USER: I am Jonathan Anderson.

ASSISTANT: Let me know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I want to return in the afternoon.

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

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.