You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you please book a flight ticket with the name of Ashley Johnson?

ASSISTANT: Sure, May I know the journey codes?

USER: My airport codes are, DEN to ATL.

ASSISTANT: Please help me with your travelling dates?

USER: My journey dates are on Oct 7th and 9th.

ASSISTANT: Do you have any connection limit?

USER: Yes, I prefer a flight with single connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.