You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you now?

USER: I am Jack Miller. Please book a flight ticket from Washington, DCA to Oakland, OAK.

ASSISTANT: Sure, let me know your journey dates.

USER: I want to travel on 04/02 and return on 04/04.

ASSISTANT: Ok, please share your price limit.

USER: Make sure to check a flight with in a price limit of 200.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your patience. Sorry, Due to the runway problem, we cannot provide you the flight for your journey.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.