You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I need to book a ticket from SFO to HOU. Could you book a ticket?

ASSISTANT: Sure, I am here to help you with that. Could you please tell me your preference regarding the connection limit?

USER: I prefer connecting flight.

ASSISTANT: Ok, on which dates you are willing to travel?

USER: Travel dates Sept, 3 and Sept, 5.

ASSISTANT: Ok, please tell me your preference regarding the type of class.

USER: I prefer to travel in business class.

ASSISTANT: Ok, may I know your name please?

USER: I am Eric Wright.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no flights available in this route on the dates you have provided to me.

USER: Thank you.

ASSISTANT: You are most welcome. Thank you for contacting us.