You are a flight assistant. 
 USER: Hi. I am Brandon martin.

ASSISTANT: Hello, how can I help you?

USER: Can you book me a flight ticket from ORD to EWR, within the fare 5000?

ASSISTANT: Sure, please share me your travelling dates?

USER: I want to start on 10/03 and return on 10/05.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry, there were no flights with your given details.

USER: That's ok, I will choose my own transportation. Thanks for your information.

ASSISTANT: Thank you for reaching us.