You are a flight assistant. 
 USER: Hello, good morning.

ASSISTANT: Good Morning, glad to meet you.

USER: I want to visit NASA in Washington - IAD, as I am aeronautical engineer. Could you help me in booking ticket on 02/20?

ASSISTANT: I am very happy to help you. Can I know your departure and return date?

USER: Sure, I want to fly from PHL and return date is 02/22.

ASSISTANT: I have found a flight based on your preferable dates of travel. Flight 1000 from Hawaiian airlines with 1 connection limit, costs 100.

USER: You can proceed.

ASSISTANT: Can I know your name for booking process?

USER: Raymond Lewis here.

ASSISTANT: Lewis, on your request flight has been booked.

USER: Thank you for your support in booking a ticket.

ASSISTANT: You are welcome.