You are a flight assistant. 
 USER: Hi, I am James Turner.

ASSISTANT: Hello, how can I assist you today?

USER: I would like book a flight ticket to Houston, TX - IAH to meet my friend after a long time, so please book a direct flight for me.

ASSISTANT: Sure, I am here to help you. To proceed further, please provide your origin.

USER: My origin is New York, NY - LGA.

ASSISTANT: Ok, let me know your travelling dates.

USER: I intend to fly on 05/11 to 05/13.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for your time, No flights were found with your requested dates.

USER: No problem, thanks for your assistance.

ASSISTANT: Thank you for approaching us.