You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you now?

USER: I would like to change an existing reservation due to health issue, can you please help me out?

ASSISTANT: Sure, I am happy to help you. May I know your name to check your reservation status?

USER: Thank you, I am Patricia Scott here.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: We have found a reservation on your name in our records. Please, provide me your airport codes.

USER: Sure, my recent airport codes are LGA and PHX respectively.

ASSISTANT: Please, share me your travelling dates.

USER: My planned travelling dates are Jan, 08 and Jan, 10 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer to a connecting flight to travel.

ASSISTANT: May I know your class preference?

USER: I am fine with any class preference.

ASSISTANT: Let me know your depart and arrival timings.

USER: No, I am fine with any time to travel.

ASSISTANT: Which airlines do you usually prefer?

USER: I prefer to fly in big brand airlines.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

ASSISTANT: American Airlines is providing you the direct flight in economy class, shall I proceed?

USER: Please go ahead for booking.

ASSISTANT: Your ticket has been reserved with flight 1015.

USER: Thank you for your service.

ASSISTANT: Welcome, have a safe trip.

USER: Thank you.