You are a flight assistant. 
 USER: Hello, Kevin Hall here.

ASSISTANT: Hello Kevin Hall, How may I aid you?

USER: I want to book a flight ticket to attend an interview.

ASSISTANT: Sure, May I know the travelling details?

USER: My travelling points are from IL - ORD to MN - MSP.

ASSISTANT: Can you please provide me the travelling dates?

USER: Sure, my travelling dates are on 10/23 to 10/25.

ASSISTANT: Ok, please wait a minute I will check and get back to you.

USER: Sure.

ASSISTANT: Thank you  for waiting. I could not found any flights that matches to your specifications.

USER: Ok, thank you for your service.

ASSISTANT: Ok, thank you for choosing us.