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

ASSISTANT: Hello. How can I serve you?

USER: I made a reservation earlier this week to meet my former colleague but due to bad weather conditions, so I need to change my travelling dates. Can you help me with this?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.