You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Nicole Miller, could you help me in booking a ticket from IAD to DTW?

ASSISTANT: Sure Miller, please share your dates to proceed?

USER: Sure, I am planning to travel for 2 days that is 11/12 to 11/14.

ASSISTANT: Thank you for your help. But sorry, I have failed in finding a flight for you.

USER: That's OK, thank you.

ASSISTANT: Sorry for inconvenience, have a nice day. Most welcome.