You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Due to some business obligations, I wont be able to travel as per my reservation. Can you please help me to modify it?

ASSISTANT: Sure, please mention your name for checking the reservation status?

USER: Katherine Martinez here.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: That's ok, thank you for your service.

ASSISTANT: Welcome, have a great day.