You are a flight assistant. 
 USER: Hi. I am Jessica Collins.

ASSISTANT: Hello. How can I aid you today?

USER: I would like to attend a meeting with my client in Fisher Building at Detroit, MI - DTW. Can you help me to book a flight under price of 200?

ASSISTANT: Sure, I am here to help you, may I know your travelling dates?

USER: My trip dates are 01/12 and recur on 01/14.

ASSISTANT: May I know your source code?

USER: My source is from Washington DC - DCA.

ASSISTANT: Sorry, no flights found on your requested dates.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your response.