You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Emy Brown.

ASSISTANT: Thank you for providing your good name. How can I help you today?

USER: I need to book a flight ticket from DTW to IAD, can you please help me for booking?

ASSISTANT: Sure, when are you planning to start your journey?

USER: I would like to start on 06/13.

ASSISTANT: May I know your return date?

USER: My return date is 06/15.

ASSISTANT: Thank you for your details, there are no flights available with the given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, hope we serve you next time.