You are a flight assistant. 
 USER: Hello, Ryan Lopez here.

ASSISTANT: Hello. How can I assist you?

USER: I would like to visit Space Center at Houston with my friends. Can you help me in booking a ticket?

ASSISTANT: Yes, I can help you. Can you share me your travelling dates?

USER: I have a plan to depart on 01/31 and return on 02/02.

ASSISTANT: Ok, can I know your nearest airport codes?

USER: The source and destination airport codes are OAK and IAH respectively.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT: I have found a flight ticket with a price of 100 and connection 1. Can I proceed to booking?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for consulting our agency.