You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I lend a hand to?

USER: I am Rachel Wilson.

ASSISTANT: Nice to meet you Rachel Wilson.

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?

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

USER: Sure.

ASSISTANT: Sorry to inform, no reservation is found with your credentials.

USER: No problem, thank you for the information.

ASSISTANT: Thank you very much for approaching our agency.