You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you for the day?

USER: I want to amend an existing reservation due to an emergency, can you please help me?

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: Can you please share your name to check your previous reservation status?

USER: Sure, my name is Gary Roberts here.

ASSISTANT: Please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: There is no active reservation found on your name in our database to change it.

USER: Ok, not an issue.Thank you for your information.

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