You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Cynthia Perez here. I want to book a ticket from IAH to PHL. Could you help me?

ASSISTANT: Sure, we are willing to help you. Could you please share your preferred dates of travel?

USER: My preferable dates are from 03/01 to 03/03.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there are no flights found from your source.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.