You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I want to book a flight ticket from DTW to LAX, can you please help me?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My preferable dates are Jan 31 and Feb 2.

ASSISTANT: Are you ok with connecting flight?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have anymore specifications?

USER: Yes, I prefer morning flight for my return journey.

ASSISTANT: May I know your name to book the flight ticket?

USER: Sure, please book the ticket under the name Thomas Thomas.

ASSISTANT: Please wait a moment to check the flights. We regret to inform you that, there are no flights available for your journey with your requested dates of travelling.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for approaching us, hope you have a good day.