You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Due to some technical issues, my meeting place has been changed. Can you please change my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: Sure, please check the reservation on the name of Linda Evans.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: We found your reservation, can you share your journey dates?

USER: My journey dates are Nov 30 and Dec 2.

ASSISTANT: May I know your airport codes for booking?

USER: My source is Phoenix, PHX and destination is Houston, HOU.

ASSISTANT: Do you have any preferences?

USER: I prefer economy class.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: There is a connecting flight with number 1020 in airline Hawaiian, the fare is 100 in economy class. Can I book it?

USER: Ok, please confirm.

ASSISTANT: Your ticket is reserved, the depart time is 5:00 AM and return is 9:00 AM.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.