You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is Richard Johnson.

ASSISTANT: Yes Richard.

USER: Can you please help me in making my reservation to LGA from ORD?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: Sure, my travelling dates are from 05/13 to 05/15.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: Sorry Richard, no flight is available on your route.

USER: No problem, thank you.

ASSISTANT: Welcome, have a good day.