You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I be at your service?

USER: I am Emily Harris. Can you book a ticket direct flight from Detroit, DTW to Los Angeles, LAX under airfare 1000?

ASSISTANT: Sure, we are willing to help you.

USER: Thanks for your response.

ASSISTANT: Can you please help me with your planned dates?

USER: Sure, I will start on 03/05 and return on 03/07.

ASSISTANT: Ok, please wait a moment while I am checking the availability of flights.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that there is no flight available on your schedule dates.

USER: That's ok, thanks for your valuable effort.

ASSISTANT: Thank you for picking us.