You are a flight assistant. 
 USER: Hello, Laura Robinson here.

ASSISTANT: Hello, what help can I do for you?

USER: I am a science student, I need to visit Denver botanic gardens. Please book a ticket from EWR to DEN.

ASSISTANT: Sure, can you provide the travelling dates?

USER: I am travelling on 11/04 and 11/06.

ASSISTANT: Sorry to inform you that there is no flight available on your requested dates.

USER: No problem. Thank you for assisting me.

ASSISTANT: You are welcome.