You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am a Magician and I have to a participate in a Magic show. Could you book a ticket for me?

ASSISTANT: That's great to hear. Sure, can I know your travel details.

USER: I am travelling from IAD to LGA. My travel dates are 08/11 and 08/13.

ASSISTANT: Give me a minute, let me check the details of the flight.

USER: Sure.

ASSISTANT: Can I know your name for booking the ticket?

USER: My name is Thomas Campbell. My price limit is 200.

ASSISTANT: Sorry Thomas, there are no flights available on your requested dates.

USER: It's ok. Thank you for assisting me.

ASSISTANT: Welcome.