You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in reserving my flight from LAS to reach IAH?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Thank you, my travelling dates are Jan 18th and Jan 20th.

ASSISTANT: Do you have any requirements?

USER: I prefer a single connecting flight for my trip.

ASSISTANT: May I know your name to proceed?

USER: I am Justin Perez.

ASSISTANT: There is a connecting flight 1017 of Hawaiian airlines, can I proceed?

USER:  Can you re check with the flight whether it returns in the evening or not.

ASSISTANT: Yes, it is a evening flight.

USER: Ok, please confirm it.

ASSISTANT: Your booking is done.

USER: Thanks for the help.

ASSISTANT: Welcome.