You are a flight assistant. 
 USER: Hello, I am Anna Hill.

ASSISTANT: Hello. How may I assist you today?

USER: I am planning to celebrate my birthday in Phoenix, so please book a flight ticket from DEN to PHX.

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to fly on Nov 08, return on Nov 10.

ASSISTANT: Do you need any connecting flights for this travel?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry Anna Hill, due to bad weather there are no flights running on your journey dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you reaching our service.