You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Patricia Baker. I want to stay for some more days at Minneapolis, can you please help me to change my flight reservation?

ASSISTANT: Please wait a moment to check the reservation status.

USER: Sure.

ASSISTANT: Sorry, no reservation found by your name.

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

ASSISTANT: Thanks.