You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Cynthia Anderson.

ASSISTANT: How can I serve you?

USER: I am planning to visit San Francisco, can you please book me a ticket from OAK to SFO?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I am planning to depart on July 03 and would like to return on July 05.

ASSISTANT: Do you need any break?

USER: Yes, I need 1 break in my journey.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for being waiting. We found a Delta airline, flight number:1021 and the price is 100.

USER: Please book my ticket with this airlines.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.