You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight from ORD to ATL. Can you please help me with the booking?

ASSISTANT: Please let me know your trip dates?

USER: Sure, I want to travel on Mar 20 and need to return on Mar 22.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a flight with single connection.

ASSISTANT: Do you have any preferences?

USER: No.

ASSISTANT: Can I know your name?

USER: My name is Thomas Hall.

ASSISTANT: Found ticket with Delta airlines for price 100 having flight number 1011.

USER: Ok, please proceed.

ASSISTANT: Ticket is booked.

USER: Thank you.

ASSISTANT: Thank you.