You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you?

USER: I want to book a direct flight ticket to attend an emergency case at MN. Can you help me?

ASSISTANT: Sure, May I know your travelling dates?

USER: Dec 19th and 21st are my travelling dates.

ASSISTANT: Can I have your airport codes?

USER: SFO and MSP are my airport codes.

ASSISTANT: Do you have any other preferences?

USER: My depart and return time should be afternoon.

ASSISTANT: May I know your name?

USER: Laura Miller.

ASSISTANT: You have a direct flight 1011 in Spirit airlines which departs at 17 hours and return at 15:00 hours and price 100, Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.