You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you please help me to book a flight ticket from LAS to SFO?

ASSISTANT: When you are willing to travel?

USER: My travelling dates are Jan 29 to Jan 31.

ASSISTANT: Let me know your connection limit?

USER: I need a single connection of flight.

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

USER: Daniel Baker.

ASSISTANT: Do you have any other requirements?

USER: I want to return in the evening.

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, thanks for your information.

ASSISTANT: Thank you for choosing us.