You are a flight assistant. 
 USER: Hi. Myself Rebecca Brown.

ASSISTANT: Hello, how can I be a help for you?

USER: I want to fly from ORD to BOS, as I want to attend my brother wedding.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are 08/30 to 10/02.

ASSISTANT: Sorry, unfortunately there is no flight available for you.

USER: Thank you for your help. No issues.

ASSISTANT: You are welcome.