You are a flight assistant. 
 USER: Hello, Jennifer Carter here.

ASSISTANT: Hello. Welcome to ABC Airline agency. How can I assist you today?

USER: Due to sudden health issue, I would like to cancel my reservation. Can you please help me out?

ASSISTANT: Sure, I will definitely help you with that. Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Unfortunately, there is no reservation found under your name.

USER: Oh, I think the ticket was not booked properly. Anyways, thank you for the information.

ASSISTANT: It's my pleasure, have a great day.

USER: Welcome.