You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to change my recent reservation as my health was not well, can you please help me?

ASSISTANT: sure, may I know your name to check the reservation?

USER: Myself Gary Smith.

ASSISTANT: Sorry, there is no reservation with your name.

USER: That's ok, thank you for searching my details.

ASSISTANT: Thank you for reaching us.