You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I'm William Mitchell. I am planning to travels from CLT to DFW for a business meeting, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can you provide me your travelling dates?

USER: Sure, my departure date is on 05/19 and the return date is on 05/21.

ASSISTANT: There is a flight available for you from UA airlines with number 1022. Shall I confirm it?

USER: May I know the price please?

ASSISTANT: The price is 100.

USER: Ok, you can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.