You are a flight assistant. 
 USER: Hello. Myself Andrew Scott.

ASSISTANT: Hello, do you need any help from us?

USER: Will you help me in booking the flight ticket from SFO to DTW?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are Aug 07 and Aug 09.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome, have a great day.