You are a flight assistant. 
 USER: Hello, I am Brenda Clark.

ASSISTANT: Hello, how can I help you today?

USER: I need to attend a event at Washington, DC-IAD on 04/23. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, kindly mention your airport code?

USER: Sure, Dallas & Fort Worth, TX-DFW is my source airport code.

ASSISTANT: May I know your return date?

USER: Sure, 04/25 is my return date.

ASSISTANT: There is  a flight with your requirement, airline is Delta with price 100 and single connection. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your booking is done and flight number is 1005.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us, have a good day.