You are a flight assistant. 
 USER: Hi. I am Sandra Green.

ASSISTANT: Hello, how can I help you for the day?

USER: I want to visit Oakland museum of California at Oakland, CA - OAK. Can you please help me with book a connecting flight?

ASSISTANT: Sure, I am here to help you. May I know your source code?

USER: My origin airport code is from Houston, TX - IAH.

ASSISTANT: When you are willing to travel?

USER:  I want to travel on 05/27, and need to catch return flight on 05/29.

ASSISTANT: Do you have any other specifications?

USER: My ticket price is 5000.

ASSISTANT: Please wait for a moment.

USER: OK.

ASSISTANT: We found 1005 UA airlines. which matches your specifications. Shall I proceed with the booking.

USER: Please proceed to book. Thanks for help us.

ASSISTANT: Your booking has been confirmed with 1005 UA airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us. have a great day.