You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I want to fly to Oakland to attend a business meeting, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure. Can I know your travelling dates?

USER: I need to depart on Feb 3rd and my return date will be on Feb 5th.

ASSISTANT: Do you need any connecting flight?

USER: I already mentioned above.

ASSISTANT: Please share me your airport codes.

USER: My source and destination airport codes PHX and OAK.

ASSISTANT: May I know your name?

USER: I am Frank Johnson.

ASSISTANT: Is there any other specifications?

USER: I want an economy class ticket.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: We found a connecting flight with an Delta airline, flight number:1015.

USER: That's fine, you can book the ticket.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for choosing us.