You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER:  I made a reservation earlier in the wrong date unknowingly. So, I want to change my existing reservation. Can you please help me with this?

ASSISTANT: Ok, please can you provide me your name?

USER: Myself Brian Anderson.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Yes, your reservation is found. May I know your airport codes to amend?

USER: That's great, my new airport codes are from ORD to HOU.

ASSISTANT: Ok, please provide me your dates of journey.

USER: My journey dates are from 11/05 to 11/07.

ASSISTANT: Please let me know your connection limit.

USER: I need a direct flight.

ASSISTANT: Please can I know your class preference?

USER: There is no specific class preference for me.

ASSISTANT: Please provide me your other intents.

USER: My return time should be in the afternoon.

ASSISTANT: Ok, thank you for waiting. Sorry as per your need there are no flights available to amend.

USER: It's ok, thank you.

ASSISTANT: Ok, thank you for choosing our agency.