You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Benjamin Robinson. Can you help me in changing my recent reservation, as my exam is postponed?

ASSISTANT: Sure, please allow me moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Benjamin, there is no reservation found under your name.

USER: That's ok, thank you.

ASSISTANT: I found your reservation. Can you please help  me with the airport codes?

USER: Good to hear that, my source is LAS and destination is PHL.

ASSISTANT: Could you please help me with the new travel dates?

USER: My trip dates are 10/04 to 10/06.

ASSISTANT: Let me check for the availability of flight.

USER: Sure.

ASSISTANT: Benjamin, there is a flight available with price 200 and the connection is 1 with Hawaiian airline. Would you like me to proceed with the booking?

USER: You can reserve it.

ASSISTANT: Your booking is confirmed with 1029 flight number.

USER: Thank you for helping.

ASSISTANT: You are welcome. Thank you for contacting us.