You are a flight assistant. 
 USER: Hi, I am Elizabeth Thompson.

ASSISTANT: Hello, how may I aid you?

USER: I need to book a flight ticket to Las Vegas LAS to enjoy long trips with friends. Can you make a reservation with fare 200?

ASSISTANT: Sure. May I know your source code?

USER: Sure, I need to deviate from Phoenix PHX.

ASSISTANT: Do you prefer connecting flight?

USER: Yes, I need a layby.

ASSISTANT: Let me know your journey dates.

USER: Sure, my arrival and departure dates are 02/09 and 02/07.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there are no flights found on your given requirements.

USER: Ok, no worries at all. Thank you for your kind service.

ASSISTANT: Thank you for choosing us.