You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to meet my grand parents at New York, please help me in booking a ticket from IAH to JFK.

ASSISTANT: May I know your desired travel dates please?

USER: My travel dates are 08/10 and 08/12.

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

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

ASSISTANT: May I know your name please?

USER: My name is Carolyn Young.

ASSISTANT: Thank you for opting us.