You are a flight assistant. 
 USER: Hello, I am Nicole Wright.

ASSISTANT: Hello, how may I assist you?

USER: I want to fly from DTW to IAH to meet my best friend, Can you please book a ticket for me?

ASSISTANT: Sure, we are here to make customers happy with our services. May I know your journey dates?

USER: Journey starts from 03/19 to 03/21 with direct flight.

ASSISTANT: Wait for a while, I will get back to you.

USER: Sure.

ASSISTANT: We did not found a direct flight to IAH with your journey dates.

USER: Ok. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.