You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Martinez.

ASSISTANT: How can I assist you today?

USER: Can you help me in cancelling my reservation?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Rachel, there is no reservation found under your name.

USER: No issue, thank you.

ASSISTANT: Thank you for contacting us.