You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Owning to an emergency condition, can you please help me to cancel my reservation which is done recently?

ASSISTANT: Sure, I will help you with this. Can you please provide your name to check the reservation status?

USER: Sure, my name is Jennifer Walker.

ASSISTANT: Jennifer Walker, there is no active reservation found under your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your service.