You are a flight assistant. 
 USER: Hello, Jennifer Rodriguez here.

ASSISTANT: Hello. What can I do for you?

USER: I have planned to attend a seminar in Houston, so could you please help me to book a flight on these dates from 07/14 to 07/16?

ASSISTANT: Can you please inform your source and destination airport codes?

USER: My origin is from LAS and destination is IAH.

ASSISTANT: Ok, please wait a moment. There is a flight ticket available as per your requsted dates. Shall I proceed?

USER: Ok, please provide flight details.

ASSISTANT: Airline is Delta and flight number is 1019.

USER: Ok, please proceed with booking.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us.