You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: This is Amanda Wright, can you help me to book a flight ticket from DFW to LAX?

ASSISTANT: Sure, I am glad to help you. May I know your travel dates?

USER: I am travelling from Jan 21 to Jan 23.

ASSISTANT: Ok, do you have any preferences?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your given travel dates.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome and thank you for choosing us.