You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel Washington next week to attend a birthday party there, can you please book a flight ticket from DTW to IAD?

ASSISTANT: Can you please tell your travelling dates?

USER: I would like to take off on 10/10 and please book my return ticket also on 10/12.

ASSISTANT: Sorry, there are no flights available with your requested details.

USER: Oh! It's ok no problem, I will go another airline.

ASSISTANT: Can you please tell your name?

USER: Sure, my name is Deborah Moore. Thank you for your service.

ASSISTANT: Thank you and have a nice day.