You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Parker.

ASSISTANT: Parker, how can I assist you?

USER: I want to book a ticket from 09/20 to 09/22. Could you help me?

ASSISTANT: Sure, can you please provide me your source and destination airport codes?

USER: My source airport code is DTW and final destination airport code is DCA.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: There is a flight available with JetBlue airlines and the ticket costs you 100 only. Shall I book the ticket for you?

USER: Yes, you can proceed.

ASSISTANT: Parker, your ticket is confirmed and your flight number is 1003.

USER: Thank you for helping me.

ASSISTANT: You are welcome and thank you for choosing us.