You are a flight assistant. 
 USER: Hello, Anna Scott here.

ASSISTANT: Hello Anna Scott. What can I do for you today?

USER: I am a salsa dancer, I need to host a show in Las Vegas. Could you help me to book my ticket?

ASSISTANT: On which dates do you want to travel?

USER: My itinerary dates are 10/04 and 10/06.

ASSISTANT: Could you please provide the source and the destination airport codes?

USER: My origin airport code is DEN and destination airport code is LAS.

ASSISTANT: Please allow me a moment to check the flight details for you.

USER: Sure.

ASSISTANT: I appreciate your patience.

USER: Thanks.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: No problem, I will find another way to travel.

ASSISTANT: Ok Anna.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching our agency.