You are a flight assistant. 
 USER: Hi. I am Joshua Parker.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to book a ticket from DCA on Dec 12, can you help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My landing date is Dec 14.

ASSISTANT: Kindly ensure your destination point?

USER: My destination airport code is IAH.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: We found an airline Hawaiian with flight 1019 having a fare 100 with halt.

USER: You can reserve it.

ASSISTANT: Your booking has been processed.

USER: Thank you for helping.

ASSISTANT: Thank you for reaching us.