You are a flight assistant. 
 USER: Hello, I am Michelle Evans.

ASSISTANT: Hello, how may I serve you?

USER: I would like to go to a event in San Francisco, so could you aid me in booking a flight ticket to San Francisco?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: Sure, I would like to go on July 01st and return back on July 03rd.

ASSISTANT: Kindly provide your journey codes.

USER: My source and destination airport codes are DEN and SFO respectively.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: There is a flight found with number 1012 in AA airline. Shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thanks for availing us.