You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my reservation which is done recently due to some problems, can you please help me out?

ASSISTANT: Sure, I am here to help you with the ticket cancellation. Can you please tell me your full name to check the ticket status?

USER: Thank you. Sure, my name is Christine Miller.

ASSISTANT: Ok, please give me a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you, there is no active reservation with your name in our database.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: You are welcome. Thank you for reaching us.