You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I need to attend a business meeting at San Francisco, can you please reserve me a flight ticket from CLT to SFO?

ASSISTANT: Sure, may I know your airline preferences?

USER: I would prefer no to fly in a low-cost airline.

ASSISTANT: Can you please share your travelling dates?

USER: Sure, my travel dates are from Mar 03 to Mar 05.

ASSISTANT: May I know your connection limit?

USER: I am looking for a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there is no flight as per your requests. May I know your name for documentation purpose?

USER: Ok, no issues. Thank you for the information. Sure, myself David Martinez.

ASSISTANT: Thank you for opting us.