You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I give assistance to you?

USER: I am planning to visit Lake Merritt at Oakland, could you please help me with booking a flight ticket from SFO to OAK?

ASSISTANT: Sure, can I know your journey dates?

USER: I would like to depart on Feb 27th and return on Feb 29th.

ASSISTANT: Do you need a stopover in between journey?

USER: I would be comfortable with single stopover.

ASSISTANT: Can I know your class preference?

USER: I have no other preferences.

ASSISTANT: Please, provide your name.

USER: I am Steven Johnson.

ASSISTANT: There is a flight of frontier airline, flight number 1013 with the fare of 100.

USER: Please confirm the booking.

ASSISTANT: Your ticket has been booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.