You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: Can you help me to book a ticket from ATL to LAX?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My travel dates are Oct 20 and Oct 22 respectively?

ASSISTANT: Do you have any connection limit?

USER: Make sure that connection limit is 1.

ASSISTANT: Is there any class preference?

USER: I prefer for economy class to travel?

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name to proceed further?

USER: Jessica Carter here.

ASSISTANT: Thanks for your details, please be on hold.

USER: Sure, take your time.

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

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.