You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Alexander Robinson. I would like to book a ticket from HOU to JFK where I have a board meeting to attend.

ASSISTANT: Can I know your travelling dates?

USER: My planned travel dates are as follows Aug 11 and Aug 13.

ASSISTANT: Is there any connection limit?

USER: I would like to board a single connection flight with return in the evening.

ASSISTANT: Do you have any preference?

USER: No. Thank you for asking.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: No issue, thank you for the assistance.

ASSISTANT: Thank you.