You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: I am Rachel Turner. Can you please help me in booking my flight ticket from IAH to EWR?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 04/26 and 04/28.

ASSISTANT: Please wait for a moment.

USER: Ok, sure.

ASSISTANT: No flight is available for you on your requested dates.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for reaching us.