You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Rebecca Clark.

ASSISTANT: How can I aid you at this moment?

USER: Can you please help me with changing my recent reservation?

ASSISTANT: Sure, I am here to help you. Please give me a moment to check your reservation status.

USER: Ok.

ASSISTANT: Rebecca Clark, there is no active reservation found under your name in our database.

USER: No problem, thanks for the information.

ASSISTANT: Thank you for utilising our service.