You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my existing reservation which is done recently, can you please help me in this?

ASSISTANT: On whose name booking is done previously.

USER: Sure, my name is Linda Gonzalez.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, that's fine.

ASSISTANT: Thank you for opting us.

USER: Anyways, thank you for your service.