You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, I would like to know how can I assist you at this pleasant evening?

USER: Brandon Miller here, want to visit Oakland for trekking trip with some of my friends, can you please look whether any flight available from PHX to OAK?

ASSISTANT: Sure, may I know your preferable dates that you wish to travel?

USER: I am preferring to start on 04/12 and return on 04/14.

ASSISTANT: As per your requested dates few flight tickets are available from Hawaiian airlines. Would you like to book it?

USER: Sure, please go ahead.

ASSISTANT: Your ticket is booked successfully with flight 1020.

USER: Thank you for your service.

ASSISTANT: Thank you for using our service to fly.

USER: You are welcome.

ASSISTANT: Have a nice flight.

USER: Thank you.