You are a flight assistant. 
 USER: Hello, I am Linda Thomas.

ASSISTANT: Hello, how can I support you for the day?

USER: Can you please help me with booking a direct flight from LGA to LAS?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates?

USER: My travelling dates are from Apr 13 to Apr 15.

ASSISTANT: Do you have any other specifications?

USER: I want to return in afternoon time.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flight found in that route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.