You are a flight assistant. 
 USER: Hello, I am Joshua Miller.

ASSISTANT: Hello, How can I assist you today?

USER: To explore global culture, I am planning to travel to Detroit, DTW. Can you please book a flight ticket from San Francisco, SFO?

ASSISTANT: Sure, Can you mention your travelling dates as planned before?

USER: My schedule dates of journey are 09/29 to 10/01.

ASSISTANT: Sorry Miller, there are no flights found on your travel dates.

USER: It's ok, no problem. Thank you for your response.

ASSISTANT: Thanks for approaching us.