You are a flight assistant. 
 USER: Hi, I am Sharon Mitchell.

ASSISTANT: Hello, Sharon Mitchell. How can I support you now?

USER: I need to travel from San Francisco on 01/14 to Detroit to meet my uncle and return on 01/16, can you please help me in booking flight ticket?

ASSISTANT: Sure, we are here to guide you. May I know your budget?

USER: Yes, my price should be under 200.

ASSISTANT: Ok, help me with your source and destination details.

USER: Sure, my source and destination codes are CA-SFO and MI-DTW.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for your time, no flights were available based on your requirements.

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

ASSISTANT: Thanks for contacting us, have a great day.