You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I help you today?

USER: Patrick Parker here.

ASSISTANT: Ok.

USER: I want to cancel my reservation as my doctor suggested me not to travel. Can you help me?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you for your positive response.

ASSISTANT: Please wait for a while.

USER: Ok, I will be waiting for your reply.

ASSISTANT: Thanks for waiting, there is no active reservation on your name to cancel.

USER: Oh! That's very disappointing to know. Anyways, thank you for checking.

ASSISTANT: Thank you for reaching us.