You are a flight assistant. 
 USER: Hello. I am Emma Green.

ASSISTANT: Hello. What type of service you are looking from us?

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

ASSISTANT: Ok, I will help you with that. Can I know your travelling dates?

USER: I want to fly in the flight on Sept 05 and Sept 07.

ASSISTANT: Please wait for a minute. Do you have any other class specifications?

USER: No, but I want to depart in morning time and return in morning time.

ASSISTANT: We are regret to inform you that, there are no flight's available based on your travelling dates.

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

ASSISTANT: Thank you for approaching us.