You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

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

ASSISTANT: Ok, could I have your name please?

USER: My name is Joshua Harris.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, there is no reservation with your name in our portal to cancel further.

USER: Ok, thank you.

ASSISTANT: You are welcome, have a great day.