You are a flight assistant. 
 USER: Hello, I am Daniel Johnson.

ASSISTANT: Hello, how may I serve you?

USER: I am heading to Houston, TX - IAH. Can you book me a ticket with single connection?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would start on 06/24 and return on 06/26.

ASSISTANT: Let me know your origin airport code please.

USER: yes, its MA - BOS to TX - IAH.

ASSISTANT: Sorry, there was no flight available that matches your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thanks for reaching us.