You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Hernandez.

ASSISTANT: How can I assist you today?

USER: Can you please help me in changing the ticket details?

ASSISTANT: Sure, please give me a moment.

USER: Thank you, I will wait for your response.

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

USER: It's ok, thank you for spending your time in checking my reservation.

ASSISTANT: Welcome, have a great day.