You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Rayon White. I am planning to visit NASA Space center at Houston, HOU. Can you please book a ticket for me?

ASSISTANT: Ok, let me know your source and travel dates.

USER: Source point is Denver, DEN.

ASSISTANT: Ok.

USER: Journey starts from 04/02 to 04/04.

ASSISTANT: There is a flight on AA airline, flight number 1016 with the fare of 100.

USER: You can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.