You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I am Katherine Brown. I want to book a flight with price limit 1000. can you help me out?

ASSISTANT: Sure,May I know you travelling dates?

USER: My travelling dates are from 01/10 to 01/12.

ASSISTANT: Let me share your airport codes?

USER: Airport codes are from DTW to SEA. I want to visit Space Needle at Seattle.

ASSISTANT: Ok, wait a moment. Thanks for waiting.

USER: I want a direct flight to Seattle.

ASSISTANT: There is no flight found with your name.

USER: Not an issue, thanks for your information.

ASSISTANT: Thank you.