You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking a flight ticket from IAH to LGA?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, my travel dates are from Apr 15 to Apr 17.

ASSISTANT: May I know your name?

USER: Myself Samantha Edwards.

ASSISTANT: Can I know your other preferences?

USER: I am looking for a connecting flight. Please make sure that, I would like to depart in the afternoon.

ASSISTANT: There is flight of southwest airline, flight number 1015 with fare of 200 and depart time is 13:00 pm.

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.