You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Anna Campbell.

ASSISTANT: How can I help you now?

USER: I want to book a flight ticket on 08/25 and 08/27, so can you help me with booking please?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know, from where would you prefer to take off?

USER: I would like to travel from Seattle, WA-SEA.

ASSISTANT: Can I have your landing airport code?

USER: Yes, my landing point is PA-PHL.

ASSISTANT: Give me a minute, I will search and let you know the flight availability.

USER: Ok.

ASSISTANT: Thanks for giving your time. Unfortunately, there are no flights found on your route that matches your requirements.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for reaching us.