You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to change my reservation due to some health issues, can you please help me out with that?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Thank you. Myself Rebecca Wilson.

ASSISTANT: Ok, wait for some time I will check the reservations on your name.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thanks for approaching us.