You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking a flight ticket from New York, LGA to reach Las Vegas, LAS?

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

USER: My journey dates are from Oct 02 to Oct 04.

ASSISTANT: Do you have any connection limit?

USER: I need a stopover in between journey.

ASSISTANT: Is there any class preference?

USER: I prefer to travel in economy class flight.

ASSISTANT: Do you have any other specifications?

USER: My departure time is morning.

ASSISTANT: May I know your good name?

USER: My name is Melissa Phillips.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry, there are no flights found on your specified routes.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you.