You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Rachel Smith.

ASSISTANT: How may I assist you now?

USER: I would like to cancel my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Rachel Smith, please allow me to check with your previous booking.

USER: Thank you for accepting my request.

ASSISTANT: Sorry to inform you, there are no flights available for your journey.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing our services.

USER: Thank you for your information.

ASSISTANT: Most welcome.