You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christine Miller.

ASSISTANT: How can I aid you at this moment?

USER: I want to cancel my recent reservation due to my health problem, so can you please help me in cancellation?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your reservation status.

USER: Sure.

ASSISTANT: Christine Miller, there is no active reservation found under your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for utilising our service.