You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Due to my mother-in-law's health problem I want to change my existing reservation. Can you please help me?

ASSISTANT: Sure, give me a minute.

USER: My name is Emma Mitchell.

ASSISTANT: May I know your name? Sorry, there is no reservation found.

USER: Ok, no problem.

ASSISTANT: Thank you for consulting us.

USER: Thanks for your assistance.