You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to travel from JFK to HOU as I want to meet my father. Please book my flight ticket.

ASSISTANT: May I know your travel dates?

USER: I have to depart on June 25 and also please book my return ticket on June 27.

ASSISTANT: May I know your name?

USER: My name is Ronald Martinez.

ASSISTANT: Do you have any preferences?

USER: I prefer for an business class.

ASSISTANT:  Do you have any other preferences?

USER: I need a flight having normal-cost and single connection.

ASSISTANT: Sorry, I did not find any flights for you.

USER: Not an issue. Anyway, thank you.

ASSISTANT: Thank you for reaching us.