You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Alexander Green from Oakland. I have to go MSP next week for attending a business meeting there, can you please book a flight ticket for me from OAK?

ASSISTANT: May I know your trip dates?

USER: Thanks, I want to take off on 05/21 and book my return ticket also on 05/23.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 is provided by Hawaiian airlines. Shall I proceed with this?

USER: Please book this flight ticket for me.

ASSISTANT: Your ticket is booked in 1021.

USER: Thank you for your help.

ASSISTANT: Most welcome.