You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please aid me to change my existing reservation as my schedule is cancelled?

ASSISTANT: Sure, please provide me the name to check for the status.

USER: Please check with the name Donald Phillips.

ASSISTANT: Please be on hold, while I check for the reservation list.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found under your name in our database to amend it.

USER: That's fine, not an issue. Anyway thank you for checking.

ASSISTANT: Thank you for reaching us.