You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Sure, I will try to find a flight with your requests. Can you help me with your travelling dates?

USER: Thank you, the travelling dates are 06/21 to 06/23.

ASSISTANT: May I know your name?

USER: Sure, my name is Betty Walker.

ASSISTANT: Could you please share your airport codes?

USER: The corresponding airport codes are from TX-HOU to TX-IAH.

ASSISTANT: Flight-1001 of UA airlines is available for you, shall I proceed? Price is 100 with 1 connection.

USER: No, I want the direct flight.

ASSISTANT: Sorry, there is no flight with 0 connection limit.

USER: No problem, I will search another way to complete my trip.

ASSISTANT: Ok.

USER: Thank you for your information.

ASSISTANT: Thank you for choosing us.