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

ASSISTANT: Hello, how may I abet you?

USER: I would like to visit Disney Land in Las Vegas, so could you please book a ticket for me?

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are BOS and LAS.

ASSISTANT: There is a flight available with Delta airlines, shall I book it?

USER: Yes.

ASSISTANT: Your booking is done with flight number 1016. Happy journey.

USER: Thank you.

ASSISTANT: Thank you for reaching us.

USER: Welcome.