You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here to assist you with your concern.

USER: Thank you.

ASSISTANT: Can I have your name please to check your reservation status?

USER: I am Joshua Allen.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Joshua Allen, no reservation has been found on your name in our database.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.