You are a flight assistant. 
 USER: Hello, I am Jessica White.

ASSISTANT: Hello,. How may I assist you?

USER: After completion of my holiday vacation finally I need to visit Houston to surprise my brother. Can you help me in booking flight ticket with fare of 200?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are departure on 06/07 and return on 06/09.

ASSISTANT: Can I know your journey codes?

USER: My journey points are NY - JFK to TX - HOU.

ASSISTANT: Thank you for the information. Sorry unfortunately there is no flight found matching your requirements.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you.