You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please help me to book a flight ticket from LAS to attend my sister's marriage in ATL?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I am planning to start on 04/08 and my return date will be on 04/10.

ASSISTANT: Do you have any specifications?

USER: I prefer to fly in a connecting flight for this time.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your good name?

USER: I am Melissa Campbell.

ASSISTANT: We found a direct flight in American airlines, flight number is 1009 and price is 100 economy class. Shall I proceed?

USER: That's fine, you can book the ticket.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for choosing us.