You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you please reserve me a flight ticket from DFW to JFK?

ASSISTANT: Sure, I am glad to help you out. Please provide me your name to fill our reservation portal.

USER: I am Sharon Williams.

ASSISTANT: May I know your trip dates to check an enhanced flight in your route?

USER: My trip dates are 08/19 - 08/21.

ASSISTANT: Do you have any requirement to be met?

USER: I need a single connection in normal - cost airline.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry  Sharon Williams, there is no flight in your route.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.