You are a flight assistant. 
 USER: Hello, Robert Moore here.

ASSISTANT: Hello. How may I help you?

USER: I planned to meet my friend in BOS, can you please help me to book a flight ticket from DTW?

ASSISTANT: Sure, I will help you. Please provide me your travelling dates.

USER: I prefer to travel on 11/30 and 12/02.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no flight found in this route.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.

ASSISTANT: You are welcome.