You are a flight assistant. 
 USER: Hello, my name is Nancy Rodriguez.

ASSISTANT: Hello, how may I support you today?

USER: I just want to change my existing reservation due to sudden demise of my Grand Father. Can you help me?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: Please standby let me check and know you the status of your reservation.

USER: Sure.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: Sorry, we do not found any reservation in your name to change your details.

USER: Not a problem. Thanks for your assistance.

ASSISTANT: Thanks for your approach. Have a nice day.