You are a flight assistant. 
 USER: Hello. I am John Hernandez.

ASSISTANT: Hello, do you need any help from us?

USER: I want to travel from IAH to JFK. Can you help me to book a flight ticket?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I want to travel in the flight on Apr 16 and Apr 18.

ASSISTANT: Ok, may I know your departure and return time?

USER: I want to return in morning time.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I want to have a connection of 1.

ASSISTANT: Ok, please allow me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight with your requests.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: You are welcome, have a great day.