You are a flight assistant. 
 USER: Hi, I am Helen Collins.

ASSISTANT: Hello, how can I serve you?

USER: I am planning to watch live cricket match in Chase field stadium at Phoenix, PHX. Can you please book a flight ticket on 12/29?

ASSISTANT: Sure, can you help me with your origin point?

USER: San Francisco, SFO is my origin point.

ASSISTANT: May I know your return journey date?

USER: My return will be on 12/31.

ASSISTANT: A flight with price 100 having single connection is found in 1023 AA airline. Shall I proceed with it?

USER: you can confirm this flight.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for choosing us.