You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: I am Katherine Lewis, I am willing to travel Denver in the month of August to attend an event over there. Can you please help me to book a flight ticket to DEN from ORD?

ASSISTANT: Sure, I am happy to help you. Can you please let me know the moving dates of your trip?

USER: I want like to move on 08/02 and want to return flight on 08/04.

ASSISTANT: As per your dates there are no flights that are moving to your region. Sorry for the trouble.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: Welcome, have a nice day.