You are a flight assistant. 
 USER: Hello, I am Charles Gonzalez.

ASSISTANT: Hello, how can I assist you?

USER: As my exams got postponed, can you please cancel my recent reservation?

ASSISTANT: Sure, I will help you. Please wait for few minutes.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Ok. Thank you.

ASSISTANT: Thank you, for reaching us.