You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Raymond Davis.

ASSISTANT: How may I help you?

USER: I am planning to visit Foshay Tower, which is located at Minneapolis & St Paul MN-MSP.Could you please aid me in booking a flight ticket?

ASSISTANT: Sure, I would be happy to aid you. Can I have your source code?

USER: My source code is Las Vegas NV-LAS.

ASSISTANT: When you are planning to depart and arrive?

USER: I am planning to depart on 11/25 and return on 11/27.

ASSISTANT: Do you prefer a stopover in between your journey?

USER: No, I need a direct flight.

ASSISTANT: Thank you for sharing the details, wait a while.

USER: Sure.

ASSISTANT: Thank you for being patience. There are only connecting flights running on your route. Are you comfortable with it?

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket has been confirmed with fare 200 in Delta airline.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.