You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Debra Robinson. Can you help me to book a flight for the dates Mar 04 and 06?

ASSISTANT: Sure, I can help you  out. Please share me your source and destination airport codes.

USER: Ok, please book for the airport codes PHX and DTW?

ASSISTANT: Do you need any break?

USER: Yes, I need a break in between of the journey.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: We found a United airline, flight number:1007 and the price is 200.

USER: That is good, please book.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.