You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Kimberly Smith here. I have to go Las Vegas for my film shooting purpose, can you please book a flight ticket from LAX to LAS?

ASSISTANT: Ok, please provide me your journey dates.

USER: My itinerary dates 11/30 to 12/02.

ASSISTANT: Please give me a minute, Smith.

USER: Sure.

ASSISTANT: There are no flights available at this moment.

USER: No problem, thank for your help.

ASSISTANT: Thank you for reaching us.