You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I made a reservation earlier this week to give a seminar but due to weather conditions I need to change it, will you help me in that?

ASSISTANT: Ok, may I know your name?

USER: My name is Jennifer Miller.

ASSISTANT:  Please wait I will revert you.

USER: Sure.

ASSISTANT: Sorry, no reservation was found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for availing us.