You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Mark Robinson.

ASSISTANT: How may I aid you?

USER: I'm planning to take my kids to Downtown Aquarium located in Houston, so can you please help me in making the reservation from DEN?

ASSISTANT: Sure, can I know the return details?

USER: I want to return on 06/20 from IAH.

ASSISTANT: Can I know the departure date?

USER: My departure day will be on 06/18.

ASSISTANT: Hold on a minute, let me check.

USER: Ok, take your time.

ASSISTANT: Flight 1000 matches with your given details, can I proceed with the booking?

USER: Yes, you can proceed with the booking.

ASSISTANT: Your ticket is booked with Frontier airlines.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe flight.