You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Mary Mitchell, I want to change my recent reservation. Can you help me with it?

ASSISTANT: Sure, I am willing to help you for this. Let me check your reservation status in our database.

USER: Ok.

ASSISTANT: Mary Mitchell sorry to intimate, no reservation is found with your criteria.

USER: That's fine.

ASSISTANT: Thank you Mary Mitchell for appraching our agency.

USER: Thank you for your quick response.