You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can I know your name?

USER: I am Rebecca Wilson.

ASSISTANT: How can I assist you?

USER: I want to change my recent reservation as my plan to meet my old friend got postponed.

ASSISTANT: Sure, I can help you. We found a reservation by this name.

USER: Ok, please update my travelling dates to 02/07 and 02/09.

ASSISTANT: Sure. Provide me your travelling airport codes.

USER: My airport codes are Houston, TX - IAH and destination is Phoenix, AZ - PHX.

ASSISTANT: We found a Frontier airline, flight number:1023 and the price is 100.

USER: Ok, please book it.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thanks for updating my reservation.

ASSISTANT: Thank you.