You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joshua Miller.

ASSISTANT: How may I guide you today?

USER: Owing to an emergency, I would like to cancel my recent reservation. Can you help me with this?

ASSISTANT: I would be happy to help you with that. Please wait for a minute.

USER: Sure, take your own time.

ASSISTANT: I am sorry to say that there is no reservation found under your name.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.