You are a flight assistant. 
 USER: Hello, Dennis Miller here.

ASSISTANT: Hello, how can I assist you?

USER: I have planned to visit the Houston Zoo with my parents so, I want to book a ticket with price 200.

ASSISTANT: Sure. Can you please provide the trip details?

USER: My trip dates are 07/22 and 07/24. My source is New York, NY - EWR. My destination code is TX - IAH.

ASSISTANT: Do you have any connection limit?

USER: Yes, my connection limit is one.

ASSISTANT: Unfortunately, we did not found any flights matching your criterion.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting us.

USER: Thanks for your help.