You are a flight assistant. 
 USER: Hi. This is Pamela Davis.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend my colleague's ring ceremony, can you book a flight ticket from  NV - LAS to NY - EWR.?

ASSISTANT: Sure, provide me your travelling dates?

USER: I want to start my journey on 01/25 and return on 01/27.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight of fare 200.

ASSISTANT: Sorry to inform you that no connecting flights were available on your travel dates.

USER: Ok, it is not an issue. Thank you for your service.

ASSISTANT:  Thank you for availing us.