You are a flight assistant. 
 USER: Hello, I'm Thomas White.

ASSISTANT: Hello Thomas White how may I help you?

USER: Could you please book a ticket from CLT to JFK.

ASSISTANT: Yes, sure. Can you please provide me your travelling dates?

USER: I would like to go on for a trip on 10/12 and 10/14.

ASSISTANT: Sorry to say this there are no flights on your preferable dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.