You are a flight assistant. 
 USER: Hi. I am David Lewis.

ASSISTANT: Hello, how can I help you now?

USER: I want to book a flight ticket with 1 connection. Will you help me in that booking a ticket?

ASSISTANT: Sure, please provide me your journey location?

USER: I want to start from SEA. And ends at OAK.

ASSISTANT: Ok, please also provide me your journey dates?

USER: I have to travel from 09/21 to 09/23.

ASSISTANT: May I know you have any price limit?

USER: My price limit should be 200.

ASSISTANT: Ok, I found a flight on your journey details, flight number is 1028, airline is UA and connection limit is 1. Shall I proceed with booking?

USER: Yes, you proceed.

ASSISTANT: Ok. Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you, have a nice journey.