You are a flight assistant. 
 USER: Hello, William Martin here.

ASSISTANT: Hello, how can I help you?

USER: As I am a doctor, I need to attend an emergency surgery in Detroit. Can you book me a ticket on 07/14 and return on 07/16?

ASSISTANT: Sure, do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Please provide me your travelling points?

USER: My airport codes are IL - ORD and MI - DTW.

ASSISTANT: Ok, please wait a moment.

USER: The price should not exceed 1000.

ASSISTANT: Ok. We have a flight found on your requirements, but that is a direct flight.

USER: But I need a single connection.

ASSISTANT: Sorry there is no flight found on single connection.

USER: OK, no problem.

ASSISTANT: Thanks for connecting us.

USER: Thank you for the information.

ASSISTANT: Have a nice day.