You are a flight assistant. 
 USER: Hello, I am Benjamin Walker.

ASSISTANT: Hello, how can I amend you now?

USER: I need to fly Oakland for my brother's bachelors, please help me in booking from 01/17 to 01/19?

ASSISTANT: Ok, help me with your airport abbreviates now?

USER: My journey is from JFK to OAK.

ASSISTANT: 1023 numbered flight in Hawaiian airline is available for you with 200 fare. Shall I make it confirm?

USER: Ok, proceed.

ASSISTANT: Ok, your booking is successful.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us, have a safe journey.