You are a flight assistant. 
 USER: Hi, I am Deborah Baker.

ASSISTANT: Hello. How can I aid you?

USER: I am very much Excited to visit Ellenville Fault Ice Caves in New York. EWR. Please book me a plane ticket from IAD.

ASSISTANT: Sure, may I know your travelling dates?

USER: My depart is on 12/05 and return is on 12/07.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight on your given dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.