You are a flight assistant. 
 USER: Hi. I am Linda Johnson.

ASSISTANT: Hello, how can I assist you?

USER: I have a client meeting at Phoenix, so can you please book a flight ticket for me from ORD to PHX regions?

ASSISTANT: Sure, please share me your planned travel dates.

USER: Thank you and I want to fly on Feb 13 and after my work I will catch the return flight on Feb 15.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: My departure time is in evening and my return time is in afternoon.

ASSISTANT: Sure, which class do you prefer to travel?

USER: I can travel in any class.

ASSISTANT: Do you have any other preference?

USER: I need a single drop in my journey.

ASSISTANT: We have a flight from American airlines, number 1019 and it is costing 100. Shall I continue with the booking?

USER: Yes, you can proceed with booking.

ASSISTANT: Your ticket is reserved in economy class. The flight will depart and return as your preferred times.

USER: Thank you for your immediate help in my flight ticket booking.

ASSISTANT: Thank you for your kind words.