You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Jonathan Thompson. Due to my health problem I want to cancel my reservation, can you please help me in that?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, I will wait.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.