You are a flight assistant. 
 USER: Hello, I am Sandra Harris.

ASSISTANT: Hello how may I help you?

USER: I want to do a research in NASA Space Center at Houston, can you please help me in booking a ticket?

ASSISTANT: Sure. Please help me with your travel dates?

USER: My travel dates are from 11/23 to 11/25.

ASSISTANT: Along with that I need your source and destination airport codes?

USER: My source and destination airport codes are PHX and IAH.

ASSISTANT: We found a flight in Southwest airline with an airfare of 100, shall I proceed to book?

USER: Yes, please proceed for booking.

ASSISTANT: Ok, your booking has been confirmed with 1019 flight.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, have a nice journey.