You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my recent reservation, can you please help me?

ASSISTANT: Sure, I am here to help you out.

USER: Ok.

ASSISTANT: May I know your name please?

USER: Myself Sarah Wright.

ASSISTANT: Wait a moment.

USER: Sure.

ASSISTANT: We found your previous reservation, can you please share your airport codes?

USER: My new airport codes are IAH and JFK.

ASSISTANT: May I know your travelling dates please?

USER: Here are my travelling dates June,05 and June,07.

ASSISTANT: Is there any connection preference?

USER: Yes, I prefer one connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sarah Wright, there are no flights available in your route.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for choosing us.

USER: Thank you for the information.