You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am William Perez.

ASSISTANT: Ok.

USER: I am planning to visit Downtown Aquarium at Houston, could you please help me with booking a flight ticket from HOU to IAH?

ASSISTANT:     Sure, I am here to help you. Please share your travelling dates.

USER: I would like to depart on May 18th and return on May 20th.

ASSISTANT: Do you need any connection in between the journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please share your other preferences.

USER: Make sure that my return time must be afternoon.

ASSISTANT: Wait a minute please.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting,  We have a economy class direct flight operated by Southwest Airlines with a fare of 100 that returns in the afternoon. Is it ok for you?

USER: Yes, please confirm the booking.

ASSISTANT: Your ticket is booked and flight number 1018.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us, have a good day.