You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a business class flight to visit my grand father's house at Las Vegas. Can you book a connecting flight?

ASSISTANT: Sure, I am here to help you. Can you please share your planned journey dates?

USER: I will travel on Jan 21 and return on Jan 23.

ASSISTANT: May I know your name please?

USER: My name is Ruth Williams.

ASSISTANT: From where would you prefer to take off?

USER: I will fly from DEN airport.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: I am sorry to inform you that, there were no flights running on your route due to abnormal weather conditions.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.