You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am George Martinez. I am planning to visit New England Aquarium at Boston, could you please help me with booking a flight ticket from HOU to BOS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: I would like to depart on Aug 23rd and return on Aug 25th.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to depart in the morning.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I am comfortable with anything. I need a business class ticket.

ASSISTANT: Which class do you prefer? Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome.