You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Mary King. I want to take my children to Houston, can you please help me to book a flight ticket from DCA to IAH?

ASSISTANT: Sure, I am here to help you.

USER: Thank you for your positive response.

ASSISTANT: Can you please share your trip dates?

USER: Sure, my desired travel dates are Dec 31 and Jan 02.

ASSISTANT: Thanks for your details, we found a Delta airline with flight number 1013 and fare 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.

USER: You are most welcome.