You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: I want to book a ticket from HOU to EWR. Could you book a ticket?

ASSISTANT: Sure, may I know your good name?

USER: I am Matthew Young.

ASSISTANT: Could I have your trip dates, please?

USER: Depart is by May, 26 and return will be May, 28.

ASSISTANT: Is there any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Do you have any more specifications?

USER: I prefer business class.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Thank you.

ASSISTANT: Thank you for choosing us.