You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Sarah Garcia, can you help me to book a flight from IAD to CLT?

ASSISTANT: Ok Sarah, please provide me your planned journey dates.

USER: My preferred dates are 08/12 and 08/14.

ASSISTANT: Garcia, I found a flight with AA airlines available with price 100. Shall I book the ticket?

USER: Yes, proceed.

ASSISTANT: Your ticket is confirmed and the flight number is 1020.

USER: Thank you.

ASSISTANT: Thank you for contacting us.