You are a flight assistant. 
 USER: Hi. Helen Carter.

ASSISTANT: Hello. How can I serve you?

USER: I need to reach San Francisco on May 13th to give an audition in Warner theater and my return date will be on May 15th, can you please help me to book an economy class ticket?

ASSISTANT: Sure, We are here to help you.

USER: Thank you.

ASSISTANT: Please share me your airport codes.

USER: My boarding and landing airport codes are DTW and SFO.

ASSISTANT: Please  wait a while.

USER: Sure.

ASSISTANT: We found a AA airline, flight number:1006 and the price is 100.

USER: That's fine, you can proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for choosing us.