You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Barbara Smith here, I want to reserve my ticket from IAH to EWR, can you please help me in this?

ASSISTANT: Sure, I am ready to help you. May I know your preferable dates?

USER: Thank you for accepting my request. Sure, my planned dates of journey are from 11/05 to 11/07.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say this, no flights are available on your desired route.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for reaching us.