You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this  moment?

USER: Can you please book a ticket from IAH to OAK to go for long trips?

ASSISTANT: Sure, I will help you with that. Can I have your  travel dates  please?

USER: My trip dates are May 1 and May 3.

ASSISTANT: Ok,  please let me know  your  preferences.

USER: I prefer business class.

ASSISTANT: Do you  have any other specifications?

USER: I want single connection.

ASSISTANT: Can I have your  good name  please?

USER: I am George Wright.

ASSISTANT: Hawaiian airlines running a flight in your  route with connection 0 and the ticket  fare is 600. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Ok, your  ticket booking has done and the flight number is 1020.

USER: Thank you.

ASSISTANT: Thank you for choosing us.