You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Jason Martin. I want to book a flight ticket to ORD from DTW in the month of October.

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: Thank you, my travelling dates are 10/13 and 10/15.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Not an issue, thank you for the help.

ASSISTANT: Thank you for reaching us.