You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

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

ASSISTANT: Sure, We are here to help you. May I know your name?

USER: Thank you. Sure, my name is Jessica Allen.

ASSISTANT: Give me a minute.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for reaching us.