You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am Brandon Brown. Please book a flight ticket on dates 04/19 and 04/21.

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you help me with your airport codes?

USER: My airport codes are LAS and CLT.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found 1020 Delta airlines with single connection with price 100.

USER: Please proceed with booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thank you for the help.

ASSISTANT: Thank you.