You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Susan White.

ASSISTANT: How best can I respond to you?

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that/.

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait, Let me check the reservation status and revert to you.

USER: Sure.

ASSISTANT: We are sorry to inform you that, we did not find any reservation on your name to cancel it.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.