You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I am William Mitchell. I am planning for a round trip from SFO to SFO, can you help me?

ASSISTANT: Sure, I will help you with that, please provide me your journey dates.

USER: Sure, my trip dates are 08/29 and 08/31.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Thanks for your patience, based on your request I found a flight with Delta and price is 100.

USER: I am ok with that, please proceed with booking.

ASSISTANT: Your ticket has been booked with your name.

USER: Thanks for your service.

ASSISTANT: It's my pleasure.