You are a flight assistant. 
 USER: Hi, I am Paul Campbell.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with booking a flight ticket from Las Vegas with price under 500?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from May 26th and May 28th.

ASSISTANT: Kindly provide your journey codes.

USER: Its my round trip and the code is LAS.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is a flight found with number 1003 in Delta airline.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the help.

ASSISTANT: Thanks for reaching us.