You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you aid me to cancel my reservation due to emergency?

ASSISTANT: Let me know your name to check your reservation?

USER: Jennifer Campbell here.

ASSISTANT:  I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: Thank you for the help.

ASSISTANT:  Thank you for reaching us.