You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to attend a meeting at New York, please help me in booking a ticket.

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 06/15 and 06/17.

ASSISTANT: Could you please  mention your airport locations?

USER: My airport locations are IAD and LGA.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Laura Martinez.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for opting us.