You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Christine Jackson.

ASSISTANT: How can I assist you?

USER: I want to change my existing reservation, due to some health issue. Can you please help me?

ASSISTANT: Yes, please can you wait a moment?

USER: Ok, take your time.

ASSISTANT: There is no reservation been found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for connecting with our agency.