You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: I am Samantha Roberts. Due to some health issues, I need to change my earlier reservation that I made to go for a seasonal festival.

ASSISTANT: Ok.

USER: Can you help me with it?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: It's ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for contacting us.