You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I respond to your request?

USER: Please book my ticket from IAD to DTW.

ASSISTANT: Sure, we are ecstatic to help you. May I know on which dates you are planning to start and return?

USER: I will be leaving on Oct 15 and returning on Oct 17.

ASSISTANT: Is there any connection limit for you?

USER: I have no specifications.

ASSISTANT: May I know your good name please?

USER: Ronald Nelson here.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Thank you, For making an inquiry with us regarding ticket booking.

USER: Thank you for your service.