You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I render you?

USER: I want to cancel my recent reservation due to suddenly fallen sick.

ASSISTANT: Ok.

USER: Can you please help me?

ASSISTANT: Sure, may I have your name?

USER: Sharon Martin is my name.

ASSISTANT: Please wait, I will let you know.

USER: OK.

ASSISTANT: Thanks for your time, no reservation is existed earlier to proceed further. Thank you for availing us.

USER: Ok, no problem. Thank you.