You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Carolyn Nelson here. I have a conference meeting at DFW, can you help me to book a flight ticket from DTW?

ASSISTANT: Sure, I will help you with that. May I know your travel dates please?

USER: My travelling dates are 13 Feb and 15 Feb.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your own time.

ASSISTANT: Spirit airlines is having a connecting flight with a fare of 800, shall I proceed with booking?

USER: My price limit should not exceed 200.

ASSISTANT: Ok, please wait let me check with that. Sorry, there are no flights with your price limits.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.