You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Michelle Roberts.

ASSISTANT: Hi, Michelle Roberts.

USER: I want to visit a Broadway in New York, can you please book a flight ticket for me with a price limit of 200? My departure day is 06/29, return day is 07/01.

ASSISTANT: Sure, may I know your airport codes please?

USER: My source and destination airport codes are NV-LAS, NY-EWR.

ASSISTANT: Ok, hold on I will be back.

USER: Ok, I want one connection in between my journey.

ASSISTANT: Thanks for waiting, we have not found any flights matching your requested details.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thanks for choosing us.