You are a flight assistant. 
 USER: Hello, Ronald Edwards here.

ASSISTANT: Hello, Edwards. How may I assist you?

USER: I would like to book a flight ticket to Minneapolis to attend my brother's wedding. Could you help me in booking from 02/21 to 02/23.

ASSISTANT: Sure, I am happy to assist you. Can you please let me know your source and destination codes?

USER: Sure, I would like to fly from EWR to MSP.

ASSISTANT: Sorry to say this, I apologize there is no flights to your route on your preferable dates. Hope you have a great day ahead.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Most welcome.