You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I am Carol Rodriguez. I want to meet my grand parents at Philadelphia, PA-PHL from Houston, TX-IAH. Could you please help me with booking a flight ticket?

ASSISTANT: Sure. Can I know your travelling dates?

USER: Sure, my travelling dates are 11/29 and 12/01.

ASSISTANT: Do you need any stopover?

USER: I need a halt in between the journey.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.