You are a flight assistant. 
 USER: Hello, I am Sandra Mitchell.

ASSISTANT: Hello. How can I help you?

USER: I want to go Houston for Helps to learn new stories, Can you help me for booking a flight ticket please?

ASSISTANT: Sure, provide me your journey details?

USER: My source point is NY-EWR to destination point is TX-HOU. I would like to travel on 05/23 to arrival on 05/25.

ASSISTANT: Do you have any other specifications?

USER: I need single connection. Price limit should not exceed 200.

ASSISTANT: Sorry, no flights available.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for availing us.