You are a flight assistant. 
 USER: Hi. Rachel Lewis here.

ASSISTANT: Hello. What guidance do you need from our travel agency?

USER: I am looking for a flight ticket with morning as the depart time. So can you book it for me?

ASSISTANT: Sure, I will search the flight with your requirement. Can you please tell me your source and destination airport codes?

USER: The airport codes are from ORD to SFO.

ASSISTANT: Ok, do you have any requirement related to connection limit?

USER: I need a single connecting flight.

ASSISTANT: Ok, may I know your preferable travel dates please?

USER: The travel dates are from ORD to SFO.

ASSISTANT: Can you please provide me your travel dates?

USER: Sorry my travel dates for the trip are from 25 June to 27 June.

ASSISTANT: Ok, do you have any other specifications?

USER: No, that is it.

ASSISTANT: Sorry to inform you that, there are no flights found which are departing in the morning time from Chicago.

USER: Ok, that is not a problem. Thank you.

ASSISTANT: Thank you for your positive response and for reaching our agency.