You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: Sure, I am Helen Martinez from Oakland, CA - OAK. Can you please book a flight ticket for me?

ASSISTANT: Helen, how can I help you? Sure, I will book the ticket. May I know the travelling dates?

USER: Sure, I will start my journey on 05/01 and return on 05/03.

ASSISTANT: Ok, may I know the destination airport code?

USER: My destination airport code is LAX.

ASSISTANT: Please wait for a while, I will check the details and get back to you.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting, there is a flight 1016 in Delta airline has the price 100.Can I proceed?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us, have a nice day. You are welcome.