You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please book me a flight ticket from LGA to LAS?

ASSISTANT: Sure, may I know your planned trip dates please?

USER: My travel dates are from Aug 17th to Aug 19th.

ASSISTANT: Can I have your good name please?

USER: I am Larry Davis.

ASSISTANT: Do you have any connection preference?

USER: I prefer a single connection in between my journey.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Larry Davis, no flights has been found on your planned trip dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.