You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be your helping hand?

USER: Owing to an emergency I had to request for this change reservation.

ASSISTANT: Ok. May I know your name to check the previous reservation?

USER: I am Jessica Robinson.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is no active reservation found on your name.

USER: Thanks.

ASSISTANT: Thank you for contacting us.