You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you help me to book a flight ticket from DTW to SFO?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: Ok, please book a ticket for the dates June 13 and 15 respectively.

ASSISTANT: May I know your name please?

USER: Ok, please book a ticket on the name Richard Mitchell.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Are there any more preferences do you need?

USER: No.

ASSISTANT: We found a connecting flight with Spirit airlines, and the fare of 200 in economy class. Shall I proceed?

USER: Ok, please book a ticket. Thank you for assisting me.

ASSISTANT: Your ticket has been reserved with 1000 flight number.

USER: Yes, that is good to know. Thank you.

ASSISTANT: Thank you for reaching us.