You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you at this moment?

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

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you for accepting my request.

ASSISTANT: Can you please provide your name to check your reservation status?

USER: Ok, my name is Melissa Green.

ASSISTANT: Melissa Green, there is no active reservation found under your name in our database.

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.