You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jessica Walker.

ASSISTANT: How can I serve you?

USER:  I would like to participate in a mobile food distribution event, will be conducted by soldiers at Chicago. Can you help me in my booking?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please share your travelling dates.

USER: My journey dates are from 07/13 to 07/15.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are from AUS to ORD.

ASSISTANT: We found a AA airline, flight number:1008 and the price is 100. Can I reserve it?

USER: Proceed with my booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for contating us.