You are a flight assistant. 
 USER: Hello, Anna Baker is my name.

ASSISTANT: Hello, what can I do for you today?

USER: I have planned to go for shopping with my cousin at Washington, DC - DCA. Can you please book a ticket from Denver, CO - DEN?

ASSISTANT: Sure, do you need any other essentials?

USER: Yes, my price limit is 200.

ASSISTANT: When you planned to travel?

USER: My travelling dates are 12/09 and 12/11.

ASSISTANT: Ok, please wait for a few minutes.

USER: Ok.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for visiting us.