You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Patricia Thomas.

ASSISTANT: How can I help you?

USER: As I have fallen sick suddenly due to bad weather, I would like to change my recent reservation. Can you help me?

ASSISTANT: Sure, I will help you. There is no reservation on your name in our database.

USER: No issue, thank you.

ASSISTANT: Thank you for opting us.