You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be of your assistance?

USER: I am Dennis Collins. I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Can you please help me out?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation found with your name.

USER: Ok, no issues. Thank you for your quick response.

ASSISTANT: Thanks for availing us.