You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to cancel my reservation due to my health issues, can you help me?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your name to check your reservation?

USER: Amanda Johnson hear.

ASSISTANT: Thanks for your name, I couldn't find any reservation with your name Amanda Johnson.

USER: Oh! That's very sad to hear from you. Anyways, thank you for checking.

ASSISTANT: Thanks for approaching us.

USER: You are most welcome.