You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be at your service today?

USER: I want to change my flight reservation, can you please help me?

ASSISTANT: Sure, we are here to help you.

USER: My reservation was done in the name of Shirley Martinez.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry we did not find any reservation with your name.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us.