You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Margaret Campbell here.

ASSISTANT: Ok.

USER:  Please search flights with connection 1 because I have to go Chicago to invite my relatives to my sister's wedding?

ASSISTANT: Ok, may I know your travelling dates?

USER: My itinerary dates are 08/29 and 08/31.

ASSISTANT: May I know your travelling airport codes?

USER: Ok, I am flying from PHX to ORD.

ASSISTANT: Sorry, I did not find any flight ticket for you to reserve.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.