You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Can you help me to change my recent reservation?

ASSISTANT: I am here to help you about that. Can you please provide your name to check the reservation status with your name?

USER: Myself Justin Martinez.

ASSISTANT: I have found your reservation with your name. Can you please provide your modified dates of journey?

USER: Oct, 20 and Oct, 22 are my journey dates.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: DFW and SFO are my airport codes.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications do you have?

USER: No.

ASSISTANT: Please be on hold to check the flights on your route.

USER: Sure.

ASSISTANT: There is a direct flight on your route which departures in the morning having a ticket fare of 200 by United airlines. Shall I proceed with the booking?

USER: Please proceed.

ASSISTANT: Ok, your ticket has been confirmed successfully.

USER: Thank you.

ASSISTANT: Thank you for approaching us, have a great journey.