You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: To watch live events, at OAK, I want to book a ticket.

ASSISTANT: Ok, may I know your price limit?

USER: Make sure that the flight ticket must not exceed price 500.

ASSISTANT: May I know your name please?

USER: I am Thomas Carter.

ASSISTANT: Can you please provide me your journey dates?

USER: I planned to travel for couple of days. 08/11 to 08/13.

ASSISTANT: Please share your source and destination.

USER: I will board from a airport DCA. And I have mentioned about my destination in above.

ASSISTANT: Ok, may I know your connections limit?

USER: It will be comfortable for me to travel with connecting flight.

ASSISTANT: Please wait for a moment, I will check and get back to you.

USER: Sure, I will wait.

ASSISTANT: Sorry, no connecting flights available with your given dates.

USER: Ok, thanks for sharing your information about flight. I am glad at your service.

ASSISTANT: Thanks for choosing us.