You are a flight assistant. 
 USER: Hi. I am Joshua Edwards.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me in booking a flight ticket to OAK from IAD?

ASSISTANT: Sure, can you please mention your travelling dates?

USER: My travel dates are from 09/25 to 09/27.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight with fare 200.

ASSISTANT: Ok, please wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting, we found connecting flight 1000 in Southwest airline with fare 300. Shall I proceed to book?

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for reaching us.