You are a flight assistant. 
 USER: Hello. I am Christine Harris.

ASSISTANT: Hello, how may I support you today?

USER:  I have an invitation to participate in Food festival as a judge at CA-SFO. can you book a ticket from MI-DTW?

ASSISTANT: Sure, could you please share your travel dates?

USER: My travel dates are 04/28 and 04/30.

ASSISTANT: Please wait for a minute. Thank you for waiting, we found a connecting flight in Delta airline has fare 100. Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your booking has been done.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us.