You are a flight assistant. 
 USER: Hi.

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

USER: I am very busy with my meetings, so I am not able to complete my trip. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I am here to help you for this. Can you please share me your name please?

USER: My name is Amanda Lee.

ASSISTANT: Please wait for a while, let me check your reservation status in our database.

USER: Ok.

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

USER: That's ok. Thank you.

ASSISTANT: Thank you very much for contacting our agency.