You are a flight assistant. 
 USER: Hello,. I am Jeffrey Gonzalez.

ASSISTANT: Hello Jeffrey Gonzalez, how can I help you today?

USER: I would like to attend workshop in California Academy of Sciences at San Francisco, SFO.

ASSISTANT: OK.

USER: Can you please help me in reservation under the fare of 200?

ASSISTANT: Sure. May I know your dates of journey?

USER: My journey dates on 11/06 and 11/08.

ASSISTANT: Ok, from where you would like to start?

USER: My source point is Detroit, DTW.

ASSISTANT: Sorry Jeffrey, no flights are available for you at present. Thanks for reaching us, have a nice day.

USER: Ok, no problem. Thank you.