You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Anthony Williams.

ASSISTANT: How can I help you Williams?

USER: Can you please check for the direct flight from SFO to LGA?

ASSISTANT: Please mention your trip dates.

USER: I want to start my journey on 05/01 and return on 05/03.

ASSISTANT: Please wait for a while.

USER: Sure.

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

USER: No problem, thank you for checking.

ASSISTANT: You are welcome.