You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what service are you looking for?

USER: Can you please help me to change my recent reservation as my schedule is cancelled?

ASSISTANT: Sure, may I know the name on which you have done reservation please?

USER: Sure, I had done reservation on the name Joseph Nelson.

ASSISTANT: Please wait while I fetch your current reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: I am not able to find your reservation in our data.

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

ASSISTANT: Thank you for reaching us.