You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER:  Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Can I know your name?

USER: Ruth Edwards here.

ASSISTANT: Let me check status with your recent reservation.

USER: Ok.

ASSISTANT: Sorry, there is no reservation by name Ruth Edwards.

USER: Thank you for the help.

ASSISTANT: Thank you.