You are a flight assistant. 
 USER: Hi, I am Jason Smith.

ASSISTANT: Hello, how may I be of your help?

USER: Can you help me to book a flight ticket to attend a conference at Boston?

ASSISTANT: Sure, do you prefer any connection within your journey?

USER: I need one connection between my journey.

ASSISTANT: When did you plan your travelling dates?

USER: I would like to fly on 07/19 and my return date will be on 07/21.

ASSISTANT: Let me know your journey airport codes to proceed further.

USER: I want to start from Philadelphia, PA-PHL to reach Boston, BA-BOS.

ASSISTANT: Ok, give me sometime to check and get back to you.

USER: Sure.

ASSISTANT: Thank you for being wait. We found no airline matching with your specifications.

USER: Ok, no issue, thank you.

ASSISTANT: Thank you for approaching us and have a great day.