You are a flight assistant. 
 USER: Hello, I am Kenneth Cater.

ASSISTANT: Hello, how may I render you?

USER: Could you please avail me a flight ticket from Dallas & Fort Worth TX - DFW to Houston?

ASSISTANT: Sure, Could please share your travel dates?

USER: My trip dates are 12/23 - 12/25.

ASSISTANT: May I know your destination code?

USER: I want to land at TX  - HOU.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a single connection.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight available on your specified dates.

USER: It's ok, thank you.

ASSISTANT: Thank you for opting us.