You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Angela Taylor.

ASSISTANT: How can I assist you?

USER: I need to book a flight ticket from Houston to meet my granny after a long time. Can you please help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 01/31 and 02/02.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are TX-HOU and MA-BOS.

ASSISTANT: Sorry, there is no flight on your requested dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your support.