You are a flight assistant. 
 USER: Hello, Joseph Williams here.

ASSISTANT: Hello. Welcome to our travel agency, how may I aid you?

USER: I am a movie director, I am making a documentary film on war veterans in San Francisco. Please book my ticket.

ASSISTANT: Sure may I know your travel airport codes?

USER: I am travelling from HOU to SFO.

ASSISTANT: Can you provide me your travel dates?

USER: My journey dates are 08/13 and 08/15.

ASSISTANT: I found a flight in Delta airlines with flight number 1029 and price 100, can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done in Delta airlines.

USER: Thank you for assisting me.

ASSISTANT: Most welcome.