You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Will you please help me to book a flight from SEA to DTW?

ASSISTANT: Sure, I am happy to help you. Please let me know your travelling dates.

USER: My planned dates are on May 16th to 18th.

ASSISTANT: Do you have any stopover in between journey?

USER: Yes, I prefer it.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: Can I have your good name?

USER: Sure, my name is Mark Rodriguez.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: No issues, thank you.

ASSISTANT: Thank you for contacting us.