You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Due to emergency, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, could you please share your name to check your details?

USER: I am Ryan Davis.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: I have successfully cancelled your reservation.

USER: Thanks for helping me.

ASSISTANT: Welcome.