You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you for today?

USER: David Phillips here. Can you help me to find a flight from DFW to LGA?

ASSISTANT: I am glad to help you about that. Can you please provide your planned dates?

USER: My travelling dates are 05/14 and 05/16.

ASSISTANT: Sorry David Phillips, there are no flights which can travel your route.

USER: That's fine. Thanks for your information.

ASSISTANT: Most welcome, thank you for reaching out here.