You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Virginia Taylor here. I want to fly from DEN to IAH. Can you check the flight availability on this journey?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My planned travel dates are 05/23 and 05/25.

ASSISTANT: Ok, may I know your departure and arrival time?

USER: Make sure that, my return time should be in evening only.

ASSISTANT: Ok, may I know in which class you need booking?

USER: Thank you, I am comfortable with any class, no more specifications please.

ASSISTANT: The economy class with flight number 1004 of Spirit airline is available having fare as 100 and connection as 0, is it ok for you?

USER: Yes, you can proceed with that booking.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 17:00 PM and the return time is 20:00 PM.

USER: Thank you, for your quick response.

ASSISTANT: You are welcome, have a great day.