You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello.

USER: I am Sandra Rodriguez.

ASSISTANT: How can I aid you?

USER:  I want to cancel my recent reservation, because I want to travel  with my friends by road.

ASSISTANT: Sure, give me a  minute.

USER: Ok.

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

USER: It's Ok, thanks for your response.

ASSISTANT: Thank you for reaching us.