You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I have made a reservation earlier to attend my business meeting but due to some technical problem it got postponed, so can you please help me with changing my reservation?

ASSISTANT: Sure. May I know your good name?

USER: My name is Rachel Hernandez.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found on your name.

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

ASSISTANT: Thank you.