You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Please help me to cancel my resent reservation as my exam got post pone.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name to track your details in our database?

USER: I am Emma Thomas.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Emma Thomas, there is no reservation exist on your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.