You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Melissa Perez want to travel to CA,LAX to participate in food festival. Can you book a connecting flight?

ASSISTANT: Sure, we are here to help you. May I know when you are willing to travel?

USER: I will depart on 04/21 and return on 04/23.

ASSISTANT: Let me know your source point?

USER: I will depart from MI-DTW.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no flights found on your requested details.

USER: 'Thank you for your response.

ASSISTANT: Thanks for choosing us.