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

ASSISTANT: Hello, how may I serve you?

USER: I am very interested to participate in Death Valley Adventure held at Oakland, CA - OAK. Can you please help me for booking a flight ticket on 08/16?

ASSISTANT: Sure, kindly share your source airport code?

USER: Ok, my source is Minneapolis & St. Paul, MN - MSP.

ASSISTANT: Please mention your return day?

USER: Sure, my return date is 08/18.

ASSISTANT: Ok, please hold on a minute. I will revert you.

USER: Sure.

ASSISTANT: Thanks for your time. We found a flight with Hawaiian airlines and flight number is 1029. Fare is 100 with single connection.

USER: Ok, you can book it.

ASSISTANT: Your reservation has been done.

USER: Thanks for your assistance.

ASSISTANT: Thank you for approaching us. Have a great day.