You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Debra Hernandez. Owing to emergency, I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no reservation under your name.

USER: Nothing to worry. Thanks for letting me know.

ASSISTANT: Thank you for reaching us.