You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jack Phillips.

ASSISTANT: How may I guide you?

USER: I would like to spend my weekends at Washington with my friends. Can you help me in booking a ticket from CLT to IAD? My preferred journey dates are 04/05 and 04/07.

ASSISTANT: Thank you for providing the information. Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your waiting, I found a flight for you in Frontier airlines with fare 100. Can I proceed?

USER: Please book the ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1016.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.