You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: I am Rachel Adams. Actually, there is a small change in my trip.Can you help me out in changing my reservation?

ASSISTANT: Sure, Rachel.

USER: Please check my details.

ASSISTANT: Let me check your details. Sorry to say you that there is no reservation under your name.

USER: That's fine for me.

ASSISTANT: May I help you with anything else?

USER: No, thank you for your service.

ASSISTANT: Thank you for reaching us.