You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donald Mitchell here.

ASSISTANT: How can I help you?

USER: Can you book my ticket from LAS to ATL?

ASSISTANT: Sure, can you please tell your travelling dates?

USER: My travelling dates are from 04/27 to 04/29.

ASSISTANT: UA airlines is available with 1 connection and ticket price is just 100. Shall I proceed with it?

USER: Please proceed.

ASSISTANT: Your reservation is confirmed with flight 1003.

USER: Thank you.

ASSISTANT: Thank you and have a nice day.