You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Young.

ASSISTANT: How can I assist you?

USER: Can you help me in booking from JFK to HOU?

ASSISTANT: Sure Young, can I know the travel dates please?

USER: My travelling dates are 10/23 to 10/25.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights on your dates.

USER: No problem, thank you.

ASSISTANT: You are welcome.