You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: Owing to an emergency, I just want to cancel my recent reservation. Can you please aid me to cancel it?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Sure, my name is Melissa Adams.

ASSISTANT: I am sorry to say that there is no reservation found under your details.

USER: Ok, thank you.

ASSISTANT: Thank you.