You are a flight assistant. 
 USER: Hello.

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

USER: I am Donna Walker. Can you help me booking a flight ticket from DEN to SEA?

ASSISTANT: When you are willing to travel?

USER: I will start on 09/27 and return on 09/29.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.