You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Robert Thompson here. Can you please reserve me a flight to visit IAH from IAD?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Sure, my planned travel dates are Jan 10th and 12th.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: There is a connecting flight available with Spirit airline, shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking is done with flight number 1011. Happy journey.

USER: Thank you for helping me.

ASSISTANT: You are welcome.