You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you aid me in booking a flight ticket from IAH to OAK?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to start on May 14th and return  back on May 16th.

ASSISTANT: Ok, do you have any specifications?

USER: I prefer to travel in business class.

ASSISTANT: Ok, hold on for a moment. Let me check the best available flight for you.

USER: Take your time. My name is Donna Anderson.

ASSISTANT: I found a flight for you with Delta Airlines and it costs you 500. Shall I proceed?

USER: Yes, you can go ahead.

ASSISTANT: Your ticket has been booked with 1026 flight number.

USER: Thank you for the support.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.