You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you the best today?

USER: Can you help me in booking a flight ticket in my preferable travel dates Apr, 9 and Apr, 11?

ASSISTANT: Sure, please share your airport codes?

USER: LGA and SFO are my airport codes.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight and need to travel in normal cost airlines only.

ASSISTANT: Can I know your name please for further process?

USER: Cynthia Martin here.

ASSISTANT: We are glad to inform you that there is a flight found with an airline Delta of flight 1005 in an economy class with lay by. Can I proceed?

USER: Please proceed.

ASSISTANT: Your seat has been confirmed.

USER: Thank you for the service.

ASSISTANT: Thank you.