You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Gregory Adams here. Could you help me to amend my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: I mentioned my name.

ASSISTANT: Sorry, please wait for a while.

USER: Sure.

ASSISTANT: We found your reservation, can you please share me your new airport codes?

USER: My genesis and terminus airport codes are LGA and DFW.

ASSISTANT: May I know on what dates your prefer to travel?

USER: My itinerary dates are May 28 and May 30.

ASSISTANT: Is there any stopover in between your journey?

USER: I need single stopover in my journey.

ASSISTANT: Do you have any airline preference?

USER: No, I have no other preferences.

ASSISTANT: Would you like to avail any benefits for your journey?

USER: What kind of benefits can I expect?

ASSISTANT: May I know your depart and arrival timings?

USER: I already said that I have no specifications.

ASSISTANT: Ok, please be on hold.

USER: Sure, please make it fast.

ASSISTANT: We found a connecting flight of Hawaiian airlines in the economy class with fare of 300, can I proceed for booking?

USER: Please proceed.

ASSISTANT: Your ticket is confirmed with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.