You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: My name is Kathleen Campbell, I want to book a connecting flight to visit my home at Houston. Can you book a flight with in fare of 200?

ASSISTANT: Sure, let me know your travelling dates?

USER: I need a flight on 1st of Feb and return flight on 3rd of Feb.

ASSISTANT: May I know your airport codes?

USER: My source point is PHL and my destination is HOU.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.