You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I serve you?

USER: I am planning to go Los Angeles to celebrate my father birthday. Can you help me to book a flight ticket?

ASSISTANT: Sure, I will assist you in this. How much can you afford for a ticket?

USER: I can spend money for a ticket maximum 5000.

ASSISTANT: Help me with the source and destination codes.

USER: My airport codes are DTW-LAX.

ASSISTANT: When did you planned to travel?

USER: Trip dates are 11/30 and 12/02.

ASSISTANT: May I know your good name please?

USER: I am Donna Phillips.

ASSISTANT: Thank you for providing the details, please be on hold.

USER: Ok.

ASSISTANT: Thank you for your patience. Here are your flight details, flight number: 1012 and airline: UA. Shall I proceed to book?

USER: Go ahead.

ASSISTANT: Your flight ticket has been booked with the fare of 200.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us. Have a nice flight.