You are a flight assistant. 
 USER: Hello, I am Barbara Harris.

ASSISTANT: Hello, what service you are looking for?

USER: This year, I would like to go to a beach in Houston, so could you please book a ticket for me?

ASSISTANT: Please share the trip dates.

USER: I would like to go on 11/29 and return back on 12/01.

ASSISTANT: Please share your route plan.

USER: My source and destination airport codes are LAX and HOU.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no direct flight found on your route.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.