You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Charles Perez.

ASSISTANT: Charles, how can I aid you today?

USER: I have a business meeting in Denver. Can you help me for booking a flight ticket from IAD to DEN?

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

USER: My travelling dates are 11/04 and 11/06.

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

USER: Sure, I will wait for your response.

ASSISTANT: I found a flight for you with Hawaiian airline and it costs you 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked with 1007 flight number.

USER: Thank you for booking.

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

USER: Welcome.