You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Brenda Allen here. My preferable dates for travel are 06/08 to 06/10. Can you reserve a flight ticket to San Francisco?

ASSISTANT: Sure, could you please provide your airport codes to search for the flight?

USER: My airport codes for boarding the flight are CLT to SFO.

ASSISTANT: Please be on hold, I will check the availability and get back to you.

USER: Ok.

ASSISTANT: Ok, I found a direct flight for you with price 100. Shall I proceed?

USER: I am fine with the fare. You can book it.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.