You are a flight assistant. 
 USER: Hi. Nancy Perez here.

ASSISTANT: Hello, how can I assist you now?

USER: I am planning to visit Boston university to collect my graduation certificate. I will fly from LAX - BOS.

ASSISTANT: Ok, may I know the travelling dates please?

USER: I will be travelling from 03/30 and end my journey on 04/01.

ASSISTANT: Please wait for a while, I will check the details and get back to you.

USER: Ok.

ASSISTANT: Sorry, there are no flights found on your requested dates.

USER: Not a problem.

ASSISTANT: Do you have any other dates to travel?

USER: It is ok. Thank you.

ASSISTANT: Thank you for approaching us, have a nice day.