You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to change my reservation which I had recently done?

ASSISTANT: Sure, I will help you.

USER: Ok, thank you.

ASSISTANT: Can I have your name?

USER: My name is Barbara Williams.

ASSISTANT: Please, standby.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Can you please share your planned journey dates?

USER: Please amend to the planned dates June 16 and 18th respectively.

ASSISTANT: May I know your boarding and landing airport codes?

USER: My planned origin code is DCA and destination code is HOU.

ASSISTANT: Let me know your connection limit.

USER: Please book a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I need a flight which depart during afternoon and return timing is during afternoon.

ASSISTANT: Thank you for sharing the details, there is a flight available with fare 100 and single connection in Spirit airline which will depart and return at 12:00 PM. Shall I confirm it?

USER: Ok, please amend it.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1012.

USER: Ok, thank you for assisting me.

ASSISTANT: Thank you for choosing us.