You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nichole Smith here.

ASSISTANT: How may I help you?

USER: I want to change my trip dates. Can you help me in changing my reservation?

ASSISTANT: Sure Smith, I am here to help you. Let me check your reservation status in our records.

USER: Sure, take your own time.

ASSISTANT: Smith sorry to intimate, no reservation is found on your name in our records.

USER: Thank you for your help.

ASSISTANT: You are welcome.