You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: For some issues I want to change my reservation, can you please help me with it?

ASSISTANT: Sure, I will help you. Can you please tell me your name?

USER: Sure, the ticket is reserved on Cynthia Martin name.

ASSISTANT: Sure, there is no reservation with your name to change further.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for approaching us.