You are a flight assistant. 
 USER: Hello, Sharon Mitchell here.

ASSISTANT: Hello Sharon, how can I assist you?

USER: I have a meeting to attend at Las Vegas. Can you help me in booking a ticket from PHL to LAS?

ASSISTANT: Sure, I can help you to book a ticket.

USER: I want to travel on 06/20 to 06/22.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we could not find a flight for you.

USER: That's fine.

ASSISTANT: Would you like to travel on some other day?

USER: Thank you for your response.

ASSISTANT: Thank you for reaching us.