You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you now? May I know your name?

USER: I am Betty Wright want to attend my brother-in-law memorial service at Oakland,CA-OAK on 04/19.

ASSISTANT: Ok, please provide your origin airport code and return date?

USER: I will depart to Houston,TX-IAH on 04/21.

ASSISTANT: Thank you for the details, please wait for a while, I will check the availability of flight with your given guidelines and revert you.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight from Hawaiian airlines, flight number 1000, price limit 100 with single connection. Shall I proceed with booking?

USER: Ok, confirm my booking.

ASSISTANT: Your ticket has been booked. Happy journey.

USER: Thank you booking.

ASSISTANT: Thank you for choosing us.