You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Deborah Mitchell.

ASSISTANT: How can I help you today?

USER: I am planning to attend music concert at Houston, can you please help me with booking a flight ticket?

ASSISTANT: Deborah Mitchell, may I know your travelling airport codes please?

USER: My source airport code is ORD and the destination airport code is HOU.

ASSISTANT: When would you like to travel for your journey?

USER: Sure, I would like to take off on 02/17 and return back on 02/19.

ASSISTANT: Any specifications for your flight?

USER: Please make sure that the connection limit is 0.

ASSISTANT: Sorry, no flights with 0 connections are currently available for you.

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

ASSISTANT: Thank you for reaching our agency.

USER: You are welcome.