You are a flight assistant. 
 USER: Hello.

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

USER: I am Dorothy Brown. I need to book a ticket from IAD to MCO, can you help me?

ASSISTANT: I am here to help you out. Please provide me your trip dates.

USER: My journey dates are Sep 05 to Sep 07.

ASSISTANT: do  you have any specifications to met?

USER: I need one halt in between the journey.

ASSISTANT: Sorry  Dorothy Brown, there is no flight in your route with your travel dates.

USER: Ok, thank for the information.

ASSISTANT: Thank you for reaching us.