You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, please share your name to check the details in the reservation list.

USER: My name is Ruth Hall.

ASSISTANT: Stay connected for a while.

USER: Sure.

ASSISTANT: Sorry, we didn't find any reservation with your name to make changes.

USER: Not an issue, thank you for the information.

ASSISTANT: Thank you.