You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I'm Melissa Adams. I am planning to attend a live concert at IAH, can you please help me with booking a flight ticket from PHL?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on 09/15 and return back from Houston on 09/17. Make sure that the connection limit is 0.

ASSISTANT: sorry, there is no direct.

USER: Ok, no issues. I will try another way to complete my trip. Thank you for checking.

ASSISTANT: You are welcome. Have a great day.