You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Young here.

ASSISTANT: How may I assist you today?

USER: I am a medical student, I have to attend a seminar on medical tourism at Houston. So please book my ticket from Las Vegas.

ASSISTANT: Nice to hear, can I have your travelling dates?

USER: My itinerary dates are 09/02 and 09/04.

ASSISTANT: Fine, please mention your airport codes to get a better airline for you.

USER: My genesis and terminus airport codes are LAS and IAH.

ASSISTANT: I found a flight-1001 on Delta airlines, should I proceed with booking?

USER: Please proceed.

ASSISTANT: Ok, ticket has been done with your name Anthony Young.

USER: Thank you for your expeditious service.

ASSISTANT: Welcome, have a safe journey.