You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Elizabeth Nelson here. I want to cancel my reservation as the wedding which I was going to attend got postponed to next year, can you help me?

ASSISTANT: Sure, please wait a moment I will check your details and proceed further.

USER: Ok, I will be waiting for you response.

ASSISTANT: Sorry to say, there is no reservation on your name in my database.

USER: Oh! That's very sad to hear from you. Anyways, thank you for helping me.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: You are most welcome.