You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Michelle Walker.

ASSISTANT: Yes Michelle, what can I do for you?

USER: I want to attend a seminar which is held in San Francisco, so could you please book a ticket to me?

ASSISTANT: May I know airport codes?

USER: Sure, I want travel on 04/20 from HOU and return on 04/22 from SFO.

ASSISTANT: Ok, let me check the availability.

USER: Sure.

ASSISTANT: Yes Michelle, I found a flight for you with flight number 1012 and the airline is Delta. Can I proceed?

USER: Can I know the price and connection limit please?

ASSISTANT: Sure, the price limit is 100 with 1 connection.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.