You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am Alexander Smith from Las Vegas. Could you please book a flight ticket from LAS to DCA?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: Thank you, I want to take off on June 22 and please confirm my return ticket also on June 24.

ASSISTANT: Ok, please allow me a moment.

USER: Ok.

ASSISTANT: The Delta airline with flight number 1000 is available having fare as 100 and connection as 1, is it ok for you?

USER: Please confirm this flight ticket for me.

ASSISTANT: Ok, your reservation is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a great day.