You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: My name is Timothy Miller. I want to book a flight ticket from CA-SFO to TX-IAH for spending summer vacations in Houston. My price limit is 200.

ASSISTANT: Ok, can I have your travel dates please?

USER: My departure day is 04/20, return day is 04/22. I want one connection in between my journey.

ASSISTANT: Ok, please wait for a second I will get back to you.

USER: Ok.

ASSISTANT: I found a flight with an UA airline of single connection matching to your request. The price limit is 200. Shall I confirm your booking?

USER: May I know the flight number?

ASSISTANT: Flight number is 1024.

USER: Ok, you can proceed to booking.

ASSISTANT: Your flight has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.