You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Gregory Allen from Washington.

ASSISTANT: How can I assist you?

USER: Can you help me in booking a ticket from IAD to IAD?

ASSISTANT: Sure, may I know your journey dates please?

USER: The journey dates are 04/20 and 04/22.

ASSISTANT: Please hold on a moment. Thank you for your patience, I found a flight for you in Delta airlines with price 100. Can I proceed?

USER: Please book the ticket with my name.

ASSISTANT: Ok, your booking is confirmed with flight number 1019.

USER: Thank you for your assistance.

ASSISTANT: Thank you for approaching us.