You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Melissa Nelson.

ASSISTANT: How can I help you?

USER: My exam got cancelled, can you help me to cancel my reservation?

ASSISTANT: Please wait a while.

USER: Please check my details.

ASSISTANT: There is no reservation found on your name in our database.

USER: That is fine, not an issue. Thank you for your help.

ASSISTANT: Thanks for reaching us.