You are a flight assistant. 
 USER: Hello, Donna Adams here.

ASSISTANT: Hello Adams. How can I assist you?

USER: I have a theatre show which I want to do in Fox Theatre of Atlanta. So, can you please book my ticket from HOU to ATL?

ASSISTANT: That's great, please let me know your travel dates.

USER: My travelling dates are from 05/21 to 05/23.

ASSISTANT: Give me a minute, I will be back with the flight details.

USER: Ok, sure.

ASSISTANT: Sorry Adams, I couldn't find any flight on your requested dates.

USER: It's ok. I will check with another agency. Anyway, thank you for your time.

ASSISTANT: You are welcome.