You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you aid me to book a ticket from EWR to OAK?

ASSISTANT: Can I know your travelling dates?

USER: My travel dates are Aug 14 and Aug 16 respectively.

ASSISTANT: Let me know your name please.

USER: Nicole Jones here.

ASSISTANT: Do you have any other preference?

USER: I prefer to travel in business class.

ASSISTANT: Sorry, no flights available in business class.

USER: Ok, then can you recheck for a connecting flight?

ASSISTANT: I have rechecked with connecting flight. But I did not found with that.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.