You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Please book a flight ticket to DTW from IAH to meet my childhood friend.

ASSISTANT: Sure, help me with the travel dates?

USER: Sure, my trip dates are on March 17 and 19.

ASSISTANT: May I know your name please?

USER: My name is Eric Hill.

ASSISTANT: Do you have any preferences?

USER: I need a connected flight in economy class.

ASSISTANT: Sorry, no flights were available at this moment.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for reaching us.