You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: Can you please change my existing reservation due to some technical issues?

ASSISTANT: Sure, may I know your name please?

USER: Mary Johnson is my name.

ASSISTANT: We found a reservation on your name, so could you please provide your new journey details?

USER: Sure, my travelling dates are 10/19 and 10/21. SFO is my source and PHX is my destination.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a connecting flight in Frontier airline has fare 100.

USER: Please proceed for booking.

ASSISTANT: Your booking has been done with flight number 1017.

USER: Thanks for booking my ticket.

ASSISTANT: Thank you for opting us.