You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen White.

ASSISTANT: How may I serve you? Nice to meet you Karen.

USER: Please, reserve me a flight ticket from BOS to IAH.

ASSISTANT: Sure, can you share your travel dates please?

USER: My travelling dates are 10/31 and 11/02.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.