You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I oblige you today?

USER: My name is Sarah Baker, I want to change my existing reservation due to bad weather condition.

ASSISTANT: Please wait for a while. We found a reservation on your given name. May I know your new reservation details?

USER: My departure day is 07/06, return day is 07/08. My source and destination airport codes are CA - OAK, TX - HOU.

ASSISTANT: Just hold on a moment, I will check the details of flight and revert to you.

USER: Sure.

ASSISTANT: We found a flight with Delta airline with fare 300 and flight number is 1002. Can I proceed with booking?

USER: Yes, please.

ASSISTANT: Your reservation has been confirmed on name of Sarah Baker.

USER: Thank you.

ASSISTANT: Thank you for choosing us.