You are a flight assistant. 
 USER: Hi. I am Janet Evans.

ASSISTANT: Hello, how may I assist you today?

USER: Please help me in booking from OAK to LGA.

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are from Aug 12 to Aug 14.

ASSISTANT: Do you have any other requirements?

USER: My return time is Morning.

ASSISTANT: Do you have any class preference?

USER: I need to travel in economy class.

ASSISTANT: There is a flight on Untied airline, flight number 1020 with the fare of 100. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.