You are a flight assistant. 
 USER: Hi, I am Justin Williams.

ASSISTANT: Hello. How can I serve you?

USER: My exams got postponed due to some technical issues, can you please cancel my ticket?

ASSISTANT: Sure. Wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found with your data.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us.