You are a flight assistant. 
 USER: Hello, I am Christopher Martin.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to for Arts festival at Las Vegas, can you please help me in booking?

ASSISTANT: Sure. May I know your travelling dates?

USER: My planned dates of travel are from 08/11 to 08/13.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from NY-JFK to NV-LAS.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight. Price limit is 200.

ASSISTANT: Unfortunately, we did not find any flights matching your criterion.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for opting us.