You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: David Campbell here.

ASSISTANT: David, how can I aid you today?

USER: I want to attend a workshop at Houston, can you please help me to book my flight ticket from BOS to HOU?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: Sure, I want to start my journey on 11/27 and also book my return ticket on 11/29.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Sure, I will wait for your reply.

ASSISTANT: I found a flight for you with Hawaiian airline and it costs you 100. Shall I proceed?

USER: Happy to hear that, you can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked with 1010 flight number.

USER: Thank you so much for your help.

ASSISTANT: Welcome, thank you for choosing us. Have a safe flight.