You are a flight assistant. 
 USER: Hello. I am Linda Collins.

ASSISTANT: Hello, how may I support you?

USER: Due to emergency I need to change my recent reservation, Can you please help me with that?

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, no reservation found with your name to change your reservation.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for contacting us.