You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am laura Evans and I want to book a flight ticket.

ASSISTANT: Sure, could you please provide your travel dates?

USER: I would like to travel on 08/17 to 08/19.

ASSISTANT: Ok, please mention your airport codes.

USER: My airport codes are from TX-IAH to NY-JFK.

ASSISTANT: Ok, please wait a moment I'll check the available flights.

USER: Ok.

ASSISTANT: Sorry to say, there are no flights found on your dates.

USER: OK no issue.

ASSISTANT: Thanks for contacting us. Have a nice day.

USER: Thank you.