You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Alexander Gonzalez. I would like to book a ticket from ATL to BOS, can you please help me out?

ASSISTANT: Sure, could you help me with your trip dates?

USER: I am travelling on these dates Aug 14th and 16th.

ASSISTANT: May I know your class preference?

USER: I don't have any class preference.

ASSISTANT: May I know your other requirements?

USER: I prefer departure time in the morning.

ASSISTANT: We found a flight of united airline, flight number 1021 with the fare of 100 and depart time is 7 AM. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.