You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Catherine Walker here, can you please check the availability of flights from DCA to ORD?

ASSISTANT: Sure, please share me your travelling dates?

USER: I would like to travel on 09/30 and 10/02.

ASSISTANT: Thanks for providing your details. We found 1004 UA airline with single connection and price of 100. Shall I proceed with booking?

USER: Perfect, please reserve it.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.