You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from DEN to IAD, can you help me in booking a flight ticket?

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

USER: Sure, my scheduled dates are Dec 9 and Dec 11.

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

USER: Patricia Clark.

ASSISTANT: Let me know your connection limit?

USER: I am comfortable with any flight.

ASSISTANT: Do you have any other requirements?

USER: I would prefer return time at morning. And I want to fly in a economy class.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.