You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please book a flight from DTW to DFW?

ASSISTANT: Can you please provide me the dates of journey you have planned to book a ticket?

USER: Sure, my travelling dates are Jan 6 - Jan 8.

ASSISTANT: Ok, please may I know your name to book a ticket?

USER: I am Alexander Gonzalez.

ASSISTANT: Do you have any preference regarding the flight connecting limits?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, is there any other intents you desire?

USER: No.

ASSISTANT: Ok, I will check please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry as per the intents you provided there are no flights available to book.

USER: Ok, not an issue.

ASSISTANT: Thank you for availing our service.

USER: Thank you for the information.