You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I want to book a ticket from DFW to LAX.

ASSISTANT: Sure, May I know the travel dates?

USER: Departure date is Oct, 6 and return date is Oct, 8.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: May I know your name?

USER: I am Shirley Hill.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Thanks.

ASSISTANT: Thank you for reaching us.