You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Thomas Miller.

ASSISTANT: What can I do for you?

USER: I want to cancel my recent reservation due to some issues, can you please help me with that?

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Thomas Miller, no reservation found on your name in our reservation list.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.