You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand?

USER: I am Charles Parker. I want to book a flight ticket from LAX to DFW. Could you help me in booking?

ASSISTANT: Sure, I will help you. Can I have your travelling dates please?

USER: My travelling dates are from 03/31 to 04/02.

ASSISTANT: Would you prefer either economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Please, hold on for a while.

USER: Ok.

ASSISTANT: Thank you for being patience, there is a flight available in Hawaiian airline, flight number 1005 having fare 300 and a lay by. Shall I proceed to book?

USER: Yes, please proceed.

ASSISTANT: Your reservation has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.