You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Laura Gonzalez. I want to go for a business meeting which is in IAD. So, I would like to travel from EWR to IAD.

ASSISTANT: Can you please provide your trip dates?

USER: Sorry, I want to change my reservation.

ASSISTANT: It's ok, please wait a moment. I will inform you.

USER: Sure.

ASSISTANT: No reservation found on your name Laura Gonzalez.

USER: Oh! It's ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.