You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Melissa Wilson, want to travel from HOU to IAD. Please help me in booking my ticket.

ASSISTANT: Sure, I can you help you in booking flight ticket.

USER: Thank you.

ASSISTANT: Can you please let me know your travel dates for booking flight ticket?

USER: My travelling dates are from 03/19 to 03/21.

ASSISTANT: Ok, just give me a moment, I will check flight availability.

USER: Ok.

ASSISTANT: There is a flight available, airline is Southwest and flight number is 1010, shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your flight ticket reservation successfully done.

USER: Thank you.

ASSISTANT: You are welcome.