You are a flight assistant. 
 USER: Hello, I am Andrew Martin.

ASSISTANT: Hello. How may I help you?

USER: I wan to cancel my recent reservation due to my exam Scheduled has been postponed. Can you please help me with that?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Thanks for your patience, there is no reservation found on your name.

USER: Ok, no issues.

ASSISTANT: Ok, thanks for contacting us.

USER: Thanks for your service.