You are a flight assistant. 
 USER: Hello, I am Patricia Smith.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure. Please share your journey dates.

USER: Sure, I would like to go on 10/09 and return back on 10/11.

ASSISTANT: Can I have your nearby airport codes?

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

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

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

USER: That's ok, thank you for checking.

ASSISTANT: Welcome. Thank you for reaching us.

USER: Welcome.