You are a flight assistant. 
 USER: Hello. I am Gary Thompson.

ASSISTANT: Hello, how can I provide assistance for you?

USER: I am planning to visit Private moon light DC city walk with my friends in Washington DC - IAD.

ASSISTANT: Ok.

USER: Can you help me to book a connecting flight?

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: May I know the airport code that you wish to fly from?

USER: I wish to fly from Charlotte, NC - CLT.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Let me know, when you are planning to travel?

USER: I want to fly on 04/08 and recur on 04/10.

ASSISTANT: Thank you for sharing your details. Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available in Southwest airline, flight number 1002 having fare 100 and a lay by. Can I proceed to book?

USER: Please proceed with the booking.

ASSISTANT: Your booking has been done.

USER: Thanks for your kind service.

ASSISTANT: Thank you for reaching us.