You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Katherine Collins. I need to book a ticket to meet a client for finalising the New Project at Google office. Could you please help me in booking a ticket from BOS?

ASSISTANT: Ok, can you provide your journey dates?

USER: Sure, my travelling dates are 04/08 and return on 04/10.

ASSISTANT: Do you have any specifications?

USER: Price should be below 5000.

ASSISTANT: Help me with the destination airport code.

USER: My destination code is IAH.

ASSISTANT: Give me a minute.

USER: Sure.

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

USER: No problem, thank you for wasting your time for checking my flight availability.

ASSISTANT: Thank you for picking us.