You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Virginia Williams. Can you help me to book a flight ticket from IAD to HOU?

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

USER: My planned travel dates are May, 3 and May, 5.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight and my return time should be at afternoon.

ASSISTANT: Here, I found a flight with 1 connection and airfare is about 100. Shall I proceed in booking?

USER: Please proceed.

ASSISTANT: In an economy class, your ticket has been confirmed for the flight 1002 in AA airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us.