You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Deborah Martin here, I want to reserve my ticket from AUS to BOS, can you please help me out?

ASSISTANT: Sure, may I know your trip dates please?

USER: Ok, my planned dates of journey are from Feb, 27 to Feb, 29.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a depart time at morning and return timing at evening.

ASSISTANT: Ok, please wait.

USER: Sure, I will wait.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: My pleasure.