You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Do you need any help from us?

USER: Owing to an emergency I had to request for this change reservation, Can you please help me in that?

ASSISTANT: Ok, I will help you with that.

USER: Thank you.

ASSISTANT: On whose name the reservation was done?

USER: My name is Catherine Rodriguez.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our records.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.