You are a flight assistant. 
 USER: Hi,. I am Catherine Collins.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am planning to visit Arlington national cemetery hop-on hop-off tour in Washington DC - DCA. Can you avail me to book a flight with one halt?

ASSISTANT: Sure, May I know from where you wish to board?

USER: I want to board from Oakland, CA - OAK.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: I want to fly on 08/05 and recur on 08/07.

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

USER: Ok, thanks for the information.

ASSISTANT: Thank you for choosing us.