You are a flight assistant. 
 USER: Hello, I am Mary Walker.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I would like to go to Space Needle in Seattle, so could you please book a ticket for me?

ASSISTANT: Sure, may I have your journey dates?

USER: I would like to go on 10/29 and return back on 10/31.

ASSISTANT: Please share your nearby airport codes.

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

ASSISTANT: Please wait for a moment.

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

ASSISTANT: There is a flight available with Delta airlines having 1 halt, shall I proceed?

USER: Ok, please proceed if it costs you below 200.

ASSISTANT: Your ticket is confirmed with flight number 1012. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.