You are a flight assistant. 
 USER: Hello. I am Jeffrey Gonzalez.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I am planning to do my birthday shopping in Nicollet Mall at Minneapolis, MSP.

ASSISTANT: Ok.

USER: Can you help me in booking a flight ticket with fare 500?

ASSISTANT: Sure, I can help you. May I know your itinerary dates?

USER: My planned journey dates are 09/24 and 09/26.

ASSISTANT: Ok, From which city airport you want to board?

USER: I want to board from Las Vegas, LAS.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I prefer a lay by in between my journey.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there were no flights found on your given requirements.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for opting us.