You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Brenda Martin. I want to book a ticket from DCA to EWR, can you help me?

ASSISTANT: Ok Martin, can you provide your travel dates please?

USER: My travel dates are 06/06 and 06/08.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for your patience, sorry to inform you that there are no flights available for your desired dates.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome, thank you for reaching us. You are welcome, thank you for reaching us.