You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Mark Thomas. I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you help me?

ASSISTANT: Sure, we are here to help you. Please allow me sometime to check your details.

USER: Ok.

ASSISTANT: Unfortunately, there is no active reservation exist you proceed further.

USER: Ok, not an issue. Thanks for your information.

ASSISTANT: Thank you for selecting our service.