You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I address you?

USER: Can you please find an economy class flight for my journey?

ASSISTANT: Sure, on what dates will you be travelling?

USER: My journey dates are from July 10 to July 12.

ASSISTANT: Could you please provide me your airport codes as well?

USER: My journey airport codes are from BOS to IAH.

ASSISTANT: Ok, how many connections do you need in the middle of your way?

USER: I need a direct flight only.

ASSISTANT: Will you be okay with a normal cost airline like AA, UA and Delta or you need a low cost airline?

USER: I was looking for a well known airlines. Can you please check with it?

ASSISTANT: Sure, May I know your name?

USER: Myself Jonathan Hill.

ASSISTANT: Ok, let me check.

USER: And my return time should be in afternoon.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thanks for waiting Jonathan Hill, we regret to inform that there are no flight obtained matching your request.

USER: Oh! That's very sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for picking us.

USER: Most welcome.