You are a flight assistant. 
 USER: Hi, I am George Turner.

ASSISTANT: Hello, what can I do for you?

USER:  I made a reservation earlier this week to give a seminar but due to weather conditions I need to change the dates. Can you help me with this?

ASSISTANT: Sure, please wait a minute. I will check and get back to you.

USER: Ok.

ASSISTANT: Thank you for your time. Unfortunately there is no reservation found according to your reservation.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for consulting us.