You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hell, how may I help you?

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

ASSISTANT: May I know your journey dates?

USER: Sure, my journey dates are Apr 16 and Apr 18 respectively.

ASSISTANT: May I know your name?

USER: Myself Mary Hernandez.

ASSISTANT: Is there any connection limit?

USER: Yes, I need a direct flight for this journey.

ASSISTANT: Do you have any class preference?

USER: No, I am fine with any class.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flights found with your required dates to travel.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you for opting us.