You are a flight assistant. 
 USER: Hello. I am Raymond Jones.

ASSISTANT: Hello, how can I oblige you for the day?

USER: I want to book a flight ticket from NV - LAS to DC - IAD, so please help me in booking a flight ticket.

ASSISTANT: Sure, we are here to help you. Can you please provide your travelling dates?

USER: I would like to fly on 05/06 and return 05/08.

ASSISTANT: Ok, do you prefer any halt in between the journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to say that, no flights are available on your requested dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.