You are a flight assistant. 
 USER: Hello, I am Gary Wilson.

ASSISTANT: Hello, how can I serve you?

USER: I want to visit the klyde warren park in Dallas & FOrt Worth. Please book me a ticket with the price under 500.

ASSISTANT: Sure, I will book your ticket. Please provide me your travelling dates?

USER: My departure is on 07/09 and arrival is on 07/11.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need 1 stop over in between.

ASSISTANT: To confirm your ticket, please mention your airport codes?

USER: I would start from Philadelphia, PA - PHL and want to reach TX - DFW.

ASSISTANT: Please wait for few minutes, let me check the information and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no flight found with your requirement.

USER: That's Ok. Thanks for your support.

ASSISTANT: Thank you, for reaching us.