You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Brown.

ASSISTANT: How may I help you?

USER: I would like to cancel my recent reservation, because I want to travel with my friends by road. Can you please help me?

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal.

USER: No more issues. Thank you for your help.

ASSISTANT: Most welcome.