You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Katherine Parker. I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket?

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

USER: I would like to take off on 01/07 and return on 01/09.

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

USER: My source airport code is IAH and destination airport code is IAD.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

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

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket is booked with Southwest airlines.

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

ASSISTANT: Thank you for reaching our agency.