You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Mary Wilson here. Can you help me in changing my ticket?

ASSISTANT: Ok, please give me a moment to check.

USER: Sure.

ASSISTANT: Ok, please help me with your airport codes.

USER: My airport codes are from OAK to MCO.

ASSISTANT: Please help me with your travel dates also.

USER: My travelling dates are from 05/21 to 05/23.

ASSISTANT: I found a flight 1010 of JetBlue airlines matches with your preferences, can I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Most welcome.