You are a flight assistant. 
 USER: Hello, I am Mary Adams.

ASSISTANT: Hello, how may I serve you?

USER: I am planning to visit the Comercia Park in Detroit, Can you book me a ticket with a single connecting flight?

ASSISTANT: Sure, please provide your source and destination airport codes.

USER: My boarding point is FL - MCO and landing point is MI - DTW.

ASSISTANT: Can you please mention your depart and arrival date?

USER: My trip dates are 04/02 to 04/04.

ASSISTANT: May I know your budget limit?

USER: I need a ticket price under 1000.

ASSISTANT: Ok, let me check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from your source.

USER: OK, no problem. Thank you for the help.

ASSISTANT: Thank you for contacting us, have a good day.