You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I would like to depart on Apr 8th and return on Apr 10th.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.