You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am looking for a direct flight from Houston to Atlanta, can you please help me in booking a ticket?

ASSISTANT: Sure, I will help you with that. Can you please share your journey dates?

USER: I would like to move on 05/26 and return on 05/28.

ASSISTANT: May I know your airport codes to proceed further?

USER: My origin and destination airport codes are IAH and ATL.

ASSISTANT: May I know your name please?

USER: My name is Scott Martinez.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight available for you.

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

ASSISTANT: Thank you for reaching us, have a great day.