You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you please aid me to change my recent reservation as my schedule is postponed?

ASSISTANT: Sure, I am here to assist you. Kindly share your name.

USER: Sure, myself Cynthia Clark.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Thank you for being patient, sorry to inform no reservation found on your name.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for reaching us, have a good day.