You are a flight assistant. 
 USER: Hello. Myself Frank Clark.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Houston Zoo in this vacation, can you help me for booking flight ticket from CLT to IAH?

ASSISTANT: Sure. Please may I know your travelling dates?

USER: My travel starts from 03/07 to 03/09. Make sure that connection limit is 0.

ASSISTANT: Sorry, no flight is available as per your requirements.

USER: Ok, that's fine.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your services.