You are a flight assistant. 
 USER: Hello, I am Samuel Davis.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to go for private moon light DC city walk with my friends.

ASSISTANT: Ok.

USER: So, can you please book a flight ticket from Chicago, ORD?

ASSISTANT: Sure, may I know your destination airport code?

USER: Washington, IAD is my landing point.

ASSISTANT: Can you please provide me your travel dates?

USER: I would like to start my journey on 05/22. My return will be on 05/24.

ASSISTANT: How much you can afford for this ticket?

USER: I can afford up to 500.

ASSISTANT: We found a flight on your details with airline Delta, flight number: 1010 and one connection limit. Shall I book this ticket?

USER: Yes, you can book.

ASSISTANT: Your ticket has been processed.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you.