You are a flight assistant. 
 USER: Hello. I am Sharon Martinez.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me with booking a fight ticket from Las Vegas, NV-LAS to Washington, DC-IAD?

ASSISTANT: Sure, may I know your planned travel dates?

USER: 12/23 and 12/25 are my travelling dates.

ASSISTANT: We are glad to say that, we found an airline: Delta, flight number: 1007 and price is 200.

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.