You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket for my daughter as she is coming to home on semester end holidays. Can you aid me in booking a ticket for her?

ASSISTANT: Sure, we are glad to serve you. Can you please share your airport codes?

USER: Ok, Her source is Washington, DC - IAD and destination is Detroit, MI - DTW.

ASSISTANT: Can I have your name to make a resevation?

USER: Sure, make the booking with her name Mary Perez.

ASSISTANT: Ok, could you please provide your planned dates?

USER: Sure, on 02/20 she wants to start and on 02/22 she will return.

ASSISTANT: Do you have any other restrictions to be met?

USER: Yes, price limit is 1000. And I need one connection.

ASSISTANT: Ok, please hold a moment, let me search a flight for you.

USER: OK.

ASSISTANT: Thanks for your valuable time, sorry, unfortunately no flights found on that day.

USER: Ok, I will try with other airline. Thanks for the information.

ASSISTANT: Thank you for approaching us, have a great day ahead.