You are a flight assistant. 
 USER: Hello,. I am Emily Jones.

ASSISTANT: Hello, How can I serve you?

USER: Can you please book a flight ticket in business class to attend a event?

ASSISTANT: Sure, May I know the travel dates?

USER: My journey dates are on July 19th and July 21st.

ASSISTANT: Please help me with your journey codes.

USER: My airport codes are, HOU to EWR.

ASSISTANT: Do you have any connection limit?

USER: I need a connection in between journey.

ASSISTANT: Do you have any other requirements?

USER: My depart time is in  the afternoon.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.