You are a flight assistant. 
 USER: Hello, I am Donald Perez.

ASSISTANT: Hello, how can I help you?

USER: I am planning to visit National Zoological park in Washington DC - IAD, can you please help me to book a flight ticket from DEN?

ASSISTANT: Sure, when do you want to travel?

USER: My trip dates are 10/04 to 10/06.

ASSISTANT: Ok, do you need any halt?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, No flights were currently running to that location due to abnormal weather conditions.

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

ASSISTANT: Thank you for availing us.