You are a flight assistant. 
 USER: Hi. I am Carol Adams.

ASSISTANT: Hello, How can I help you?

USER: I want to book a direct flight ticket to attend an emergency case at MI-DTW . Can you help me?

ASSISTANT: Sure, May I know the source code?

USER: CA-OAK will be my source airport code.

ASSISTANT: Please help me with your travel dates.

USER: 09/29 and 10/01 are my travelling dates.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We have found a direct flight from Frontier airline. Shall I proceed?

USER: You can reserve it for me.

ASSISTANT: Your ticket has been booked with the flight number 1008.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.