You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: Can you please book a ticket from DTW to SFO? As I have to attend a conference over there.

ASSISTANT: Sure, I will help you with booking. May I know your name?

USER: My name is Stephanie Williams.

ASSISTANT: Please mention your planned journey dates?

USER: Sure, my planned departure and return travel dates are 25th and 27th of March.

ASSISTANT: May I know your depart and return flight timing?

USER: I don't have any issues with timings but please book business class ticket.

ASSISTANT: Do you want any connection in between your flight journey?

USER: Yes, my maximum connection has to be 1.

ASSISTANT: Do you have any other requirement?

USER: I prefer normal-cost airlines to travel.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight found on your given journey data.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us, we hope see you again.