You are a flight assistant. 
 USER: Hi, Donna Wilson here.

ASSISTANT: Hello, Donna Wilson. How may I help you?

USER: I would like to participate in Arts competition at Neon Museum in Las Vegas, would you help me in booking a flight to NV - LAS?

ASSISTANT: Sure, I will check flights to Las Vegas.

USER: Ok.

ASSISTANT: From where are you boarding to Las Vegas?

USER: My nearest airport is DC - DCA at Washington.

ASSISTANT: Can I have your journey dates, please?

USER: My journey dates are on 04/01 to 04/03.

ASSISTANT: Please hold on, I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we are sorry to inform you that no flights available to your route.

USER: No issues, thanks for your support.

ASSISTANT: Thank you for reaching us.