You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please assist me to change my existing reservation as my scheduled interview got postponed?

ASSISTANT: Sure, may I know your name?

USER: I am Sandra Wright.

ASSISTANT: Give me a minute for checking.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.