You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, is there any emergency that you need from my side?

USER: Michael Lopez here. I am looking a flight from EWR to BOS, can you help me out?

ASSISTANT: Sure, on what dates would you like to book the ticket?

USER: I would like to move on 05/15 and return on 05/17.

ASSISTANT: Thank you for providing your information, there is no flight that is moving on your journey dates to book the ticket.

USER: Oh! not a problem. Thank you for giving information.

ASSISTANT: It's my pleasure to serve you and thank you for reaching our agency.