You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a ticket to Washington, DCA?

ASSISTANT: Sure, when are you willing to fly?

USER: I am planning to travel on 09/15.

ASSISTANT: Ok, let me know your departure airport code?

USER: Houston, IAH is the source point.

ASSISTANT: Ok, let me know your return date?

USER: After my brother-in-law's birthday celebration, I will be back on 09/17.

ASSISTANT: Ok, can I have your name please?

USER: I am Pamela Lewis.

ASSISTANT: Ok, flight- 1018, airline- Frontier, price- 100 with connection matches your requested details. Shall I proceed?

USER: Ok. You can proceed to book.

ASSISTANT: Ok, your ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.