You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you?

USER: Owing to an emergency I had to request for this change reservation.

ASSISTANT: Sure, Can you please let me know your good name?

USER: My name is Betty Lewis.

ASSISTANT: Sorry, we did not find any active reservation on your name in our records.

USER: Thank you.

ASSISTANT: Thank you for choosing us.