You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Debra Rodriguez. I have planned to visit my friend home on dates of 09/24 and 09/26.

ASSISTANT: OK, please provide the airport codes?

USER: My airport codes are IAD and CLT.

ASSISTANT: I found a flight for you with price 100.

USER: That's fine.

ASSISTANT: Sorry, the price is 200. Shall I confirm the ticket?

USER: Yes, please book it.

ASSISTANT: OK, your ticket has been booked with Spirit airline and the flight number is 1007.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.