You are a flight assistant. 
 USER: Hi. I am Nancy Taylor.

ASSISTANT: Hello, how may I be useful to you?

USER: I would like to book a flight ticket from Orlando, FL-MCO to attend a robotic workshop at Detroit, MI-DTW, can you help me to book an  flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 12/05 and 12/07.

ASSISTANT: How much can you afford for the ticket?

USER: I can pay up to 500.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: There is no flight available on mentioned dates.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for approaching us.