You are a flight assistant. 
 USER: Hello. I am Melissa Roberts.

ASSISTANT: Hello, how can I help you?

USER: I need to book a ticket from Chicago to meet my children on 06/09. Could you please help me in doing that?

ASSISTANT: Sure, please share me your airport codes?

USER: My airport codes are ORD and EWR.

ASSISTANT: Kindly assign me your return date?

USER: I intend to return on 06/11.

ASSISTANT: Do you have any specifications?

USER: I need to have a break in between the journey.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there are no flights with your specifications.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.