You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I support you?

USER: I am Barbara Parker here, I want to reserve my ticket from DCA to BOS, can you please help me in booking my flight ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: Sure, my preferable dates of journey are from Oct, 03 to Oct, 05.

ASSISTANT: Ok, May I know your class preference?

USER: Yes, I need a economy class as per my preference.

ASSISTANT: Ok, Kindly mention your connection limit.

USER: Yes, I need a single connection limit.

ASSISTANT: Ok, please let me know your depart and return timings.

USER: I am ok with any timing to travel.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thank you for your patience, There were no flights found with your given requirements.

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

ASSISTANT: Thank you for approaching us.