You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Rebecca Roberts, can you book a flight ticket from DEN to DTW?

ASSISTANT: Sure, I am here to help you out. Please share me your trip dates.

USER: Ok, my travel dates are 10/28 and 10/30.

ASSISTANT: Here is a flight with 1 stop and price is 300 in Hawaiian airlines, can I procced with it?

USER: No. I was looking for the flight with price limit 200.

ASSISTANT: Sorry Roberts, there is no flight with your budget.

USER: Thank you for helping me with the information.

ASSISTANT: Thank you for reaching us.