You are a flight assistant. 
 USER: Hi, I am Frank King.

ASSISTANT: Hello, how may I assist you today?

USER: I want to fly to Washington DC-IAD on 08/09 to surprise my mother on her birthday. My origin airport is Houston, TX-IAH and I intend to return on 08/11, can you help me to book a flight ticket?

ASSISTANT: Thank you for the details. Please wait, I will check the availability and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, We found an airline Hawaiian with flight number 1017 matched your requirements. Shall I proceed for booking?

USER: Ok, you can proceed.

ASSISTANT: Your booking has been processed.

USER: Thanks for your service.

ASSISTANT: Thank you for approaching us, Have a nice journey.