You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to book a ticket from CLT to OAK?

ASSISTANT: Can I know your travelling dates?

USER: My travelling dates will be on Mar 4 to Mar 6.

ASSISTANT: Please let me know your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: Mary Thompson here.

ASSISTANT: Do you have any other preference?

USER: No.

ASSISTANT: Sorry, no flights available on your route.

USER: Ok, not an issue. Thank you.

ASSISTANT: Most welcome.