You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Thomas.

ASSISTANT: How may I help you?

USER: I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from DEN to BOS?

ASSISTANT: May I know your travel dates?

USER: I would like to take off on 12/02 and return on 12/04.

ASSISTANT: Sorry, there is no flight found basis on your details.

USER: That's ok, I will find another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.