You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donna Lewis.

ASSISTANT: How may I assist you today?

USER: I want to book a ticket from IAH to DTW, to visit the Detroit Institute of Arts which is located in Detroit.

ASSISTANT: Sure Donna Lewis, please share your travelling dates.

USER: Sure, my trip dates are 03/24 and 03/26.

ASSISTANT: Please wait for a minute.

USER: Sure, get back with the flight availability.

ASSISTANT: Sorry, I could not find any flight with your details.

USER: It's ok, I will concern another agency to full fill my trip. Anyway thanks for your information.

ASSISTANT: It's my pleasure, have a great day.