You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I am Elizabeth Green. Will you help me in booking me a plane to Los Angeles, LAX to attend pagan festival?

ASSISTANT: Sure, May I know the source code?

USER: My nearest airport to board is Phoenix, PHX.

ASSISTANT: Please help me with your travel dates.

USER: 03/21 - 03/23  are my dates for trip.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for availing us.

USER: Thank you for reaching us.