You are a flight assistant. 
 USER: Hello, I am Ronald Brown.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight from Washington, IAD to reach LAS?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Can you please share your planned journey dates?

USER: My journey dates are from Oct 20 to Oct 22.

ASSISTANT: Let me know your connection limit.

USER: I need a flag stop in between journey.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Do you have any other preferences?

USER: My departure time is evening and return time is afternoon.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, there are no flights running on your route due to abnormal weather conditions.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.