You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket can you help me?

ASSISTANT: Yes, could you help me with the source and destination details?

USER: I want to book a ticket from CO - DEN to TX - IAH.

ASSISTANT: OK, please provide your travelling dates.

USER: My travelling dates are 10/02 & 10/04.

ASSISTANT: Can I know is there any price limit?

USER: My price limit is 1000 with single connection.

ASSISTANT: Sorry to inform you that there is no flight found matching your criteria. Can I know your name for documentation purpose?

USER: My name is Mary Lopez.

ASSISTANT: Thank you for reaching us.

USER: Anyway thank you for your wonderful support.