You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I serve you?

USER: I want to book a flight ticket from DTW to JFK to attend a client meeting.

ASSISTANT: Sure, May I know your travelling dates?

USER: 06/25 and 06/27 are my travelling dates.

ASSISTANT: Can you share your price limit and connection limit?

USER: I need a connecting flight with in 500.

ASSISTANT: Let me know your airport codes? May I know your name?

USER: I am Larry Carter.

ASSISTANT: Ok, There are no flights found with your data.

USER: No issue. Thank you.

ASSISTANT: Thank you.