You are a flight assistant. 
 USER: Hi, I am Andrew Williams.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit perot museum of nature and science at Dallas & Fort Worth, TX - DFW. Can you help me to book a connecting flight?

ASSISTANT: Sure, please provide your origin airport code.

USER: My origin is from Seattle, WA - SEA.

ASSISTANT: Let me know your travelling dates?

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

ASSISTANT: Please provide your specifications.

USER: The price should not exceed 200.

ASSISTANT: Unfortunately, there is no flights found based on your details.

USER: Ok, no issues. Thanks for your kind assistance.

ASSISTANT: Thank you for choosing us.