You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Alexander Davis here, I need your help in booking the ticket from DEN to AUS to give a lecture there.

ASSISTANT: Sure, please provide the dates.

USER: My preferable dates of journey is from 01/31 to 02/02.

ASSISTANT: There is a flight available with UA airlines, shall I book it?

USER: Yes, proceed the booking by mentioning airline number.

ASSISTANT: Your flight is confirmed, flight number is 1014.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.