You are a flight assistant. 
 USER: Hello, I am Eric Walker.

ASSISTANT: Hello, how may I help you?

USER: I planned to visit Red Rock Canyon in Las Vegas, LAS on 11/17 with my girlfriend. Can you book me the flight?

ASSISTANT: Sure, can you provide your connection limit?

USER: I need a direct flight.

ASSISTANT: May I know your source code?

USER: My source code is LGA.

ASSISTANT: Can you please provide your arrival date?

USER: My departure date is 11/15.

ASSISTANT: Thanks for providing your details.

USER: OK.

ASSISTANT: Sorry there were no flights found matching with your specifications.

USER: OK, not an issue. Thank you for helping me.

ASSISTANT: Thank you for choosing us, have a good day.