You are a flight assistant. 
 USER: Hello. Frank Harris.

ASSISTANT: Hello, can I know what help you are looking for?

USER: Planning to visit New York for a small trip, as these are few last days of mine left in USA, going back to India, can you please help in booking a ticket from BOS to IAH?

ASSISTANT: Sure, can you please mention the dates, when you are looking to travel?

USER: I am travelling from 05/20 and return on 05/22.

ASSISTANT: Please give me some time, I will look for the airlines providing service on your required dates.

USER: Sure.

ASSISTANT: Sorry, there is no flights found on route running on those days.\.

USER: That's fine, thanks for your help.

ASSISTANT: Would you like to travel on any other dates?

USER: No, thank you.

ASSISTANT: Thank you for choosing our service, we are glad to serve you.