You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Taylor.

ASSISTANT: How can I help you?

USER: I want to attend a wedding in New York. Can you book a ticket from DEN to JFK?

ASSISTANT: Ok, may I know your travel dates please?

USER: I want to travel on 06/13 and 06/15.

ASSISTANT: Sorry to inform you that there are no flights available on those dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you so much for choosing us.