You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Brenda Lewis. Can you help me to book a flight from JFK to HOU?

ASSISTANT: Sure, could you please share me with your dates of journey?

USER: My trip dates are 10/18 and 10/20.

ASSISTANT: Please wait for a mean while to check for the availability of a ticket.

USER: Sure.

ASSISTANT: Sorry Lewis, there is no flight found as per your travelling details.

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome.