You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is James Young.

ASSISTANT: How can I abet you today?

USER: I have a plan to meet my friend in New York, can you help me for booking a flight ticket?

ASSISTANT: Sure, I will help you in booking. Can you please share your travelling airport codes?

USER: My travelling airport codes are from IAH to EWR.

ASSISTANT: On which dates you want to travel?

USER: My travelling dates are 07/26 and 07/28.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.