You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Ruth Evans. I need to book a flight ticket to Detroit, MI - DTW on 07/08. Can you book for me?

ASSISTANT: Sure, can I know your source point?

USER: San Francisco, CA - SFO  is my source.

ASSISTANT: When you want to return from Detroit?

USER: On 07/10 I would like to return.

ASSISTANT: May I know your connection limit?

USER: I need a connection in between.

ASSISTANT: I found a flight with fare of 300 and flight number 1012.

USER: Ok, it's good please proceed to book.

ASSISTANT: Your flight booking is confirmed from Spirit airlines.

USER: Ok, that's good to hear. Thank you.

ASSISTANT: Thanks for using our service.