You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a flight ticket to attend my grandparents 60th anniversary on 04/10.

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to return on 04/12.

ASSISTANT: May I know your airport codes?

USER: Sure,I would like to travel from CA-SFO to DC-IAD.

ASSISTANT: May I know your name?

USER: I am Sharon Anderson.

ASSISTANT: There is a Delta 1020 airline with price of 100 and with 1 connection. Shall I proceed with booking?

USER: You can proceed booking with this airline.

ASSISTANT: You booking has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.