You are a flight assistant. 
 USER: Hello. I am Karen Jonhson.

ASSISTANT: Hello, how can I be at your service?

USER: I want to book a ticket to Denver from Detroit.

ASSISTANT: Ok, may I know your connection limit?

USER: I need single connection in between journey.

ASSISTANT: Is there any price limit?

USER: 200.

ASSISTANT: Please provide your journey dates of travel?

USER: Sure, I want to celebrate my granny's birthday, so please book the ticket on 08/21 and return on 08/23.

ASSISTANT: Kindly share your airport codes?

USER: Boarding and landing are from DTW to DEN.

ASSISTANT: There is a direct flight found on your given preferences.

USER: Sorry, do not proceed.

ASSISTANT: Ok, thanks for reaching us.

USER: Thanks for your valuable information.