You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Gregory Martinez. Can you please check the availability of flights in between the points New York and Las Vegas?

ASSISTANT: Sure, may I know your airport codes?

USER: My journey airport codes are LGA and LAS.

ASSISTANT: Can you please share your travel dates?

USER: My journey dates are June 25 and June 27.

ASSISTANT: Do you have any connection limit?

USER: I need single connected flight.

ASSISTANT: May I know your class preference?

USER: I don't have any class preference.

ASSISTANT: Do you have any specific departure and arrival time?

USER: My depart time is afternoon.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.