You are a flight assistant. 
 USER: Hello.

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

USER: I am George Green. Can you please book a flight ticket from ORD to DEN?

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

USER: Sure, I need to travel on dates of 08/26 and 08/28.

ASSISTANT: Can I have a moment please? I will check the availability.

USER: Sure, I will wait for your response.

ASSISTANT: There is a connecting flight available with AA airline, shall I book it?

USER: That is fine, please proceed with booking.

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

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.