You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I am Christopher Mitchell. Can you help me in booking from OAK to CLT, as there is a business meeting to attend?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: My trip dates are Oct 21 to Oct 23.

ASSISTANT: Do you need a connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Thank you for providing all necessary details. Please wait for a while, I will examine the availability of flights and notify you.

USER: Sure.

ASSISTANT: We found a UA airline, fight number:1029 and the price is 100.

USER: You can reserve it.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.