You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Jacob Anderson. I want to travel from HOU to ATL to attend a conference meeting. Will you please help me in booking my ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: Sure, I probably planned my trip dates to depart on 05/20 and return back on 05/22.

ASSISTANT: Let me check for the availability of flight.

USER: Sure, take your time.

ASSISTANT: Jacob, I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok. Thank you for your time.

ASSISTANT: You are welcome. Thank you for contacting us, have a great day.