You are a flight assistant. 
 USER: Hello, I am Sandra Lopez.

ASSISTANT: Hello, how can I help you?

USER: As I am a director, I am planning to attend for film festival at Denver, DEN.Can you please book a flight ticket for me?

ASSISTANT: Sure, please share me your travelling dates?

USER: My schedule dates are 04/28 to 04/30.

ASSISTANT: Kindly assign me your source code?

USER: I would like to fly from Detroit, DTW.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We found 1004 AA airline with single connection and price of 100. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you.