You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a connecting flight , could you please help me with booking a flight ticket with my requirement?

ASSISTANT: Sure, May I know your travelling dates?

USER: I would like to depart on Apr 15th and return on Apr 17th.

ASSISTANT: Can you share me your airport codes?

USER: My source airport code is SFO and destination airport code is MSP.

ASSISTANT: Do you have any class preference?

USER: I need a flight ticket in economy class.

ASSISTANT: Is there any other preferences?

USER: I have no other preferences.

ASSISTANT: May I know your name?

USER: I am Frank Lopez.

ASSISTANT: You have a connecting flight 1012 in AA airline and price 100, Shall I proceed?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket has been reserved in economy class.

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

ASSISTANT: Thank you.