You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am a techie and I need to attend a workshop on ORACLE in Las Vegas with my colleagues. Will you help me in booking a flight ticket from CLT to LAS?

ASSISTANT: Sure, I am happy to help you. Do you prefer direct or connecting flight?

USER: Thank you, I prefer a connecting flight.

ASSISTANT: Would you like to travel in economy or business class?

USER: I would like to travel in an economy class.

ASSISTANT: Let me know your depart and arrival dates.

USER: Sure, my departure is on Dec 22 and arrival is on Dec 24.

ASSISTANT: May I know your good name?

USER: Myself Carolyn Smith.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there are no flight found in search.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.