You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to change my reservation due to postpone of my interview. Please help me with it.

ASSISTANT: Sure, we are here to help you. Please provide your name to check the reservation list?

USER: Sure, I am Susan Turner.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for waiting. There was no reservation found on your given name. Thank you for contacting us.

USER: Thank you.