You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I want to fly on 02/07 and will return from my trip on 02/09, please book me a ticket on these dates.

ASSISTANT: Sure. Do you need a lay by in between your journey?

USER: I am looking for a direct flight.

ASSISTANT: Please share your airport codes.

USER: My source is OAK and destination is DCA.

ASSISTANT: Can I have you name please?

USER: I am David Wright.

ASSISTANT: Thanks for sharing the details. There are no flights are running on your route due to heavy rains.

USER: That's fine, thanks for the information.