You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am planning to visit San Francisco to enjoy my trip, can you help me with booking a connecting flight?

ASSISTANT: Sure, We are here to help you out. Please share me your travelling dates.

USER: Thank you. My trip dates are Apr 16 and Apr 18.

ASSISTANT: Kindly let me know your airport codes.

USER: I will fly from PHX to reach SFO.

ASSISTANT: May I know your name?

USER: I am Frank Davis.

ASSISTANT: We found a connecting flight with an Spirit airlines, flight number:1021.

USER: Please confirm it.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.