You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I need to change my current reservation due to urgent meeting, can you help me with that?

ASSISTANT: Sure, please share me your good name.

USER: I am Brenda Adams.

ASSISTANT: Please standby. Sorry to say that, there is no active reservation found on your name.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for communicating with us.