You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Rebecca Williams. I want to book a ticket from SFO to ORD, can you help me?

ASSISTANT: Ok, may I know your travelling dates?

USER: My travel dates are 07/28 and 07/30.

ASSISTANT: Please let me know your depart and arrival timings?

USER: I want to depart in the afternoon.

ASSISTANT: May I know the connection limit?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights found on your route with your specifications.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us,.