You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Roberts here.

ASSISTANT: How can I help you today?

USER: I want to reserve a ticket for my journey in the month of September from DTW - LAS, can you please help me?

ASSISTANT: Sure, I will help you in booking, please share your travelling dates?

USER: My travelling dates will be from 09/08 to 09/10.

ASSISTANT: Roberts, no flights as per your details.

USER: Oh! No issues with it, thank you for checking with availability.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.