You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Jason Robinson here. Due to some problem at my house, I have to change my existing reservation. Could you please help me with this?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details for you.

USER: Sure.

ASSISTANT: Jason, I have checked and see that there is no reservation found under your name.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: You are welcome. Thank you for contacting us.