You are a flight assistant. 
 USER: Hi. I am Joshua Parker.

ASSISTANT: Hello, how may I assist you for the day?

USER: Please book me a flight ticket from TX - IAH to NY - JFK.

ASSISTANT: Sure, may I know your journey dates please?

USER: I have a match on 12/12 so I need to reach my destination on that day and I would return on 12/14.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry we did not find any flights matching your credentials.

USER: It's Ok, thanks for you response.