You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Deborah Green, I want to book a flight ticket to Las Vegas to meet my grand father from New York. Can you book a flight ticket?

ASSISTANT: Sure, please provide your dates of journey?

USER: I will travel on 09/22 and return on 09/24.

ASSISTANT: Ok, please share your airport codes?

USER: I will fly to NV-LAS from NY-LGA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: A flight in Delta airline is matching your criteria with a fare of 100. Shall I confirm it?

USER: Sure.

ASSISTANT: Ok, your booking with 1000 numbered flight is completed. Thanks for approaching us, have a nice day.

USER: Thank you for booking flight ticket.