You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: William Perez this side, please see whether any flight is available from ORD to LGA.

ASSISTANT: Sure Perez, can you please provide me your travelling dates to check the availability of flight?

USER: I am planning to travel on 09/10 and 09/12.

ASSISTANT: Ok, give me a moment.

USER: I am looking for direct flight.

ASSISTANT: Sorry Perez, there is no flight found for you.

USER: Ok, no issues, thank you for your support.

ASSISTANT: Welcome.