You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency I need to cancel my recent reservation. Will you help me out in my cancellation?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please provide your name to check the previous reservation.

USER: Sure, reservation is done with my name Elizabeth Johnson.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any reservation with your name.

USER: Ok, thank you for prompt response.

ASSISTANT: Thank you for reaching us.