You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to go Boston for shopping purpose so I need to book a plane reservation. Can you please help me for booking?

ASSISTANT: I can help you with that. Can you share the airport codes please?

USER: I can leave Denver CO-DEN to attend at Boston MA-BOS.

ASSISTANT: Could you provide me your preferable dates please?

USER: Actually I planning to shopping date on 06/03 So I am staring on 06/02 and intend return on 06/04.

ASSISTANT: May I know your name please for proceeding further?

USER: Sure, I am Virginia Edwards here.

ASSISTANT: Sorry Edwards, there are no flights on your dates.

USER: Ok, no issues. Thanks for your good response.

ASSISTANT: Thank you for choosing us.