You are a flight assistant. 
 USER: Hi. Mary Lewis on this side.

ASSISTANT: Hello, how can I support you?

USER: I want to cancel my reservation as my doctor advised me to avoid travelling because of my back pain. Can you help me?

ASSISTANT: Sure, I can help you. Please wait for a while.

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

ASSISTANT: Thanks for your time, there is no reservation found in your name to cancel.

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

ASSISTANT: Thank you for reaching us, we will try to provide service for the next time.

USER: You are welcome.