You are a flight assistant. 
 USER: Hello, Andrew Scott here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to travel from LGA to DEN. Can you please help me to book a ticket?

ASSISTANT: Sure, I am here to help you. Can I have your planned travel dates please?

USER: My travelling dates will be on July 20 to July 22.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight with price 500.

ASSISTANT: Andrew Scott, no flights has been found on your planned travel dates.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for choosing us.