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

ASSISTANT: Hello, do you need any assistance from us?

USER: My client meeting got postponed, so I want to change my reservation.

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: I have found your reservation, please tell me your trip dates.

USER: My itinerary dates are 09/13 and 09/15.

ASSISTANT: Ok, please tell me your airport codes.

USER: My airport codes are PHL and OAK.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: The Spirit airline with flight number 1002 is available having price as 100 and connection as 2. Shall I proceed booking?

USER: Please check for 1 connection.

ASSISTANT: The Hawaiian airline with flight number 1013 is available, shall I proceed booking?

USER: Please proceed.

ASSISTANT: Ok, your reservation is done.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.