You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid  you?

USER: I want to book a flight ticket with the name Helen Harris. Can you help me?

ASSISTANT:  Sure,May I know your airport codes?

USER: My source is NY-EWR and my landing point is NV-LAS.

ASSISTANT: Please share your travelling dates.

USER: My journey dates would be on 06/09 to 06/11.

ASSISTANT: Do you have any connection limit?

USER: I need one connection between the flights.

ASSISTANT: Please wait a while.

USER: Ok.

ASSISTANT: Thanks for being waiting.

USER: Ok.

ASSISTANT: Unfortunately, there are no flights found.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.