You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Sarah Miller.

ASSISTANT: Glad to meet you Sarah Miller.

USER: Can you book a flight ticket from LAS to IAD?

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

USER: Thank you. My planned travel dates are 03/25 and 03/27.

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

USER: Sure.

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

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1005 flight number.

USER: Thank you.

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