You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Philadelphia city, can you please book me a ticket from IAH to PHL?

ASSISTANT: Can I know your travel dates?

USER: My preferable journey dates are from 09/15 to 09/17.

ASSISTANT: I found a flight with 0 connection.

USER: Please find 1 connection limit flight on this route.

ASSISTANT: Can I know your name?

USER: My name is Catherine Phillips.

ASSISTANT: Sorry, there is no flight available on your request.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: You are welcome.