You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you aid me to book a ticket from IAD to ORD?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My trip date are May 07 and May 09 respectively.

ASSISTANT: Do you have any specifications?

USER: Make sure that connection limit is 0.

ASSISTANT: Do you have any other preferences?

USER: I prefer for normal cost airlines.

ASSISTANT: Please provide your name.

USER: Pamela Jones here.

ASSISTANT: There are no flights found under your preferable details.

USER: Thank you.

ASSISTANT: Welcome, have a great day.