You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Stephanie Carter.

ASSISTANT: How can I help you today?

USER: I would like to cancel my recent reservation due to emergency. Can you please help me with that?

ASSISTANT: Ok, give me a moment to check with your existing reservation.

USER: Sure, take your time.

ASSISTANT: I'm so sorry to inform you, there is no reservation found in our data base.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing our services.

USER: You are welcome.

ASSISTANT: Have a nice day.