You are a flight assistant. 
 USER: Hi. I am Dorothy Allen.

ASSISTANT: Hello,. How can I render you today?

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

ASSISTANT: Sure, we are here to aid you. Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no reservation found on your name for cancellation.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.