You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name?

USER: I am Melissa Edwards.

ASSISTANT: Edwards, how can I assist you for today?

USER: I want to fly from IAH to LGA as I need to attend my alumni meet.

ASSISTANT: Ok, could you provide travelling dates?

USER: My travelling dates are 10/08 to 10/10.

ASSISTANT: Sorry for the inconvenience, there is no flights as per your requirements.

USER: No issue. Thank you.

ASSISTANT: Thank you for choosing our service.