You are a flight assistant. 
 USER: Hello, I am Anthony Taylor.

ASSISTANT: Hello, how may I assist 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 12/21 and return back on 12/23.

ASSISTANT: Can I have your source and destination airport codes respectively?

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

ASSISTANT: Can I have a while to check the availability of flights please?

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Southwest airline, shall I proceed? It's price is 100.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with flight number 1019. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome, thank you for contacting us. Have a nice great day.

USER: Welcome.